12 Days of Christmas
            
                        
                    
                        
                    47th
                        
                    
                        
                    
        
            99 Bottles of Beer
            
                        
                    
                        
                    56th
                        
                    
                        
                    
        
            Abundant Numbers
            
                        
                    56th39th
                        
                    
                        
                    
        
            Abundant Numbers (Long)
            
                        
                    51st32nd
                        
                    
                        
                    
        
            Arithmetic Numbers
            
                        
                    42nd23rd
                        
                    
                        
                    
        
            Ascending Primes
            
                        
                    
                        
                    18th
                        
                    
                        
                    
        
            ASCII Table
            
                        
                    
                        
                    30th
                        
                    
                        
                    
        
            brainfuck
            
                        
                    
                        
                    16th
                        
                    
                        
                    
        
            Card Number Validation
            
                        
                    
                        
                    17th
                        
                    
                        
                    
        
            Christmas Trees
            
                        
                    
                        
                    22nd
                        
                    
                        
                    
        
            Collatz
            
                        
                    
                        
                    39th
                        
                    
                        
                    
        
            Cubes
            
                        
                    
                        
                    19th
                        
                    
                        
                    
        
            Day of Week
            
                        
                    
                        
                    30th
                        
                    
                        
                    
        
            Diamonds
            
                        
                    
                        
                    12th
                        
                    
                        
                    
        
            Divisors
            
                        
                    70th30th
                        
                    
                        
                    
        
            Emirp Numbers
            
                        
                    
                        
                    34th
                        
                    
                        
                    
        
            Emirp Numbers (Long)
            
                        
                    
                        
                    16th
                        
                    
                        
                    
        
            Evil Numbers
            
                        
                    
                        
                    39th
                        
                    
                        
                    
        
            Evil Numbers (Long)
            
                        
                    
                        
                    29th
                        
                    
                        
                    
        
            Factorial Factorisation
            
                        
                    
                        
                    9th
                        
                    
                        
                    
        
            Farey Sequence
            
                        
                    
                        
                    21st
                        
                    
                        
                    
        
            Fibonacci
            403rd220th95th36th923rd
        
            Fizz Buzz
            
                        
                    
                        
                    37th46th54th
        
            Foo Fizz Buzz Bar
            
                        
                    
                        
                    41st
                        
                    
                        
                    
        
            Fractions
            
                        
                    
                        
                    29th
                        
                    
                        
                    
        
            Game of Life
            
                        
                    
                        
                    16th
                        
                    
                        
                    
        
            Happy Numbers
            
                        
                    
                        
                    41st
                        
                    
                        
                    
        
            Happy Numbers (Long)
            
                        
                    
                        
                    26th
                        
                    
                        
                    
        
            Intersection
            
                        
                    
                        
                    26th
                        
                    
                        
                    
        
            Inventory Sequence
            
                        
                    
                        
                    18th
                        
                    
                        
                    
        
            ISBN
            
                        
                    
                        
                    38th
                        
                    
                        
                    
        
            Kaprekar Numbers
            
                        
                    
                        
                    19th
                        
                    
                        
                    
        
            Kolakoski Sequence
            
                        
                    
                        
                    28th
                        
                    
                        
                    
        
            Leap Years
            
                        
                    
                        
                    85th
                        
                    
                        
                    
        
            Leyland Numbers
            
                        
                    
                        
                    27th
                        
                    
                        
                    
        
            Look and Say
            
                        
                    
                        
                    29th
                        
                    
                        
                    
        
            Lucky Numbers
            
                        
                    
                        
                    19th
                        
                    
                        
                    
        
            Lucky Tickets
            
                        
                    
                        
                    9th
                        
                    
                        
                    
        
            Medal Tally
            
                        
                    
                        
                    7th
                        
                    
                        
                    
        
            N Queens
            
                        
                    
                        
                    9th
                        
                    
                        
                    
        
            Niven Numbers
            
                        
                    
                        
                    40th
                        
                    
                        
                    
        
            Niven Numbers (Long)
            
                        
                    
                        
                    30th
                        
                    
                        
                    
        
            Number Spiral
            
                        
                    
                        
                    15th
                        
                    
                        
                    
        
            Odious Numbers
            
                        
                    
                        
                    42nd
                        
                    
                        
                    
        
            Odious Numbers (Long)
            
                        
                    
                        
                    26th
                        
                    
                        
                    
        
            Ordinal Numbers
            
                        
                    
                        
                    35th
                        
                    
                        
                    
        
            Pangram Grep
            
                        
                    
                        
                    31st
                        
                    
                        
                    
        
            Partition Numbers
            
                        
                    
                        
                    15th
                        
                    
                        
                    
        
            Pascal’s Triangle
            
                        
                    
                        
                    34th
                        
                    607th
        
            Pernicious Numbers
            
                        
                    
                        
                    56th
                        
                    
                        
                    
        
            Pernicious Numbers (Long)
            
                        
                    
                        
                    34th
                        
                    
                        
                    
        
            Prime Numbers
            
                        
                    
                        
                    33rd
                        
                    935th
        
            Prime Numbers (Long)
            
                        
                    
                        
                    21st
                        
                    
                        
                    
        
            Proximity Grid
            
                        
                    
                        
                    14th
                        
                    
                        
                    
        
            Quine
            
                        
                    76th27th
                        
                    842nd
        
            Recamán
            
                        
                    
                        
                    14th
                        
                    
                        
                    
        
            Reverse Polish Notation
            
                        
                    
                        
                    16th
                        
                    
                        
                    
        
            ROT13
            
                        
                    
                        
                    18th
                        
                    
                        
                    
        
            Rule 110
            
                        
                    
                        
                    15th
                        
                    
                        
                    
        
            Set
            
                        
                    
                        
                    12th
                        
                    
                        
                    
        
            Seven Segment
            
                        
                    
                        
                    19th
                        
                    
                        
                    
        
            Sierpiński Triangle
            
                        
                    
                        
                    27th
                        
                    
                        
                    
        
            Smith Numbers
            
                        
                    
                        
                    18th
                        
                    
                        
                    
        
            Tic-tac-toe
            
                        
                    
                        
                    12th
                        
                    
                        
                    
        
            Tongue-twisters
            
                        
                    
                        
                    28th
                        
                    
                        
                    
        
            Transpose Sentence
            
                        
                    
                        
                    14th
                        
                    
                        
                    
        
            Trinomial Triangle
            
                        
                    
                        
                    10th
                        
                    
                        
                    
        
            United States
            
                        
                    
                        
                    25th
                        
                    
                        
                    
        
            Van Eck Sequence
            
                        
                    
                        
                    17th
                        
                    
                        
                    
        
            π
            
                        
                    
                        
                    48th