12 Days of Christmas
            27th
                        
                    
                        
                    
        
            99 Bottles of Beer
            24th
                        
                    
                        
                    
        
            Abundant Numbers
            29th893rd
                        
                    
        
            Abundant Numbers (Long)
            19th
                        
                    
                        
                    
        
            Arithmetic Numbers
            14th
                        
                    
                        
                    
        
            ASCII Table
            8th
                        
                    
                        
                    
        
            Catalan Numbers
            28th
                        
                    
                        
                    
        
            Catalan’s Constant
            13th
                        
                    
                        
                    
        
            Christmas Trees
            26th
                        
                    
                        
                    
        
            Collatz
            26th537th
                        
                    
        
            CSS Colors
            19th
                        
                    
                        
                    
        
            Cubes
            10th
                        
                    
                        
                    
        
            Day of Week
            1st
                        
                    
                        
                    
        
            Diamonds
            24th
                        
                    
                        
                    
        
            Divisors
            55th624th
                        
                    
        
            Emirp Numbers
            38th
                        
                    
                        
                    
        
            Emojify
            19th
                        
                    
                        
                    
        
            Evil Numbers
            39th
                        
                    
                        
                    
        
            Evil Numbers (Long)
            27th
                        
                    
                        
                    
        
            Farey Sequence
            10th
                        
                    
                        
                    
        
            Fibonacci
            33rd179th
                        
                    
        
            Fizz Buzz
            1st883rd60th
        
            Foo Fizz Buzz Bar
            4th347th
                        
                    
        
            Fractions
            20th
                        
                    
                        
                    
        
            Happy Numbers
            31st
                        
                    
                        
                    
        
            Happy Numbers (Long)
            18th
                        
                    
                        
                    
        
            Intersection
            15th
                        
                    
                        
                    
        
            Kolakoski Constant
            14th
                        
                    
                        
                    
        
            Kolakoski Sequence
            22nd
                        
                    
                        
                    
        
            Leap Years
            1st
                        
                    
                        
                    
        
            Leyland Numbers
            25th
                        
                    
                        
                    
        
            Look and Say
            14th
                        
                    
                        
                    
        
            Lucky Numbers
            9th
                        
                    
                        
                    
        
            Morse Decoder
            12th
                        
                    
                        
                    
        
            Niven Numbers
            29th
                        
                    
                        
                    
        
            Niven Numbers (Long)
            3rd
                        
                    
                        
                    
        
            Number Spiral
            9th
                        
                    
                        
                    
        
            Odious Numbers
            36th
                        
                    
                        
                    
        
            Odious Numbers (Long)
            25th
                        
                    
                        
                    
        
            Ordinal Numbers
            25th
                        
                    
                        
                    
        
            Pangram Grep
            27th
                        
                    
                        
                    
        
            Pascal’s Triangle
            24th
                        
                    
                        
                    
        
            Pernicious Numbers
            54th
                        
                    
                        
                    
        
            Prime Numbers
            51st
                        
                    
                        
                    
        
            Prime Numbers (Long)
            25th
                        
                    
                        
                    
        
            Quine
            1st
                        
                    
                        
                    
        
            Recamán
            18th
                        
                    
                        
                    
        
            Rijndael S-box
            18th
                        
                    
                        
                    
        
            Rock-paper-scissors-Spock-lizard
            13th
                        
                    
                        
                    
        
            Roman to Arabic
            21st
                        
                    
                        
                    
        
            Seven Segment
            25th
                        
                    
                        
                    
        
            Sierpiński Triangle
            23rd
                        
                    
                        
                    
        
            Sudoku
            6th
                        
                    
                        
                    
        
            Tongue-twisters
            27th
                        
                    
                        
                    
        
            United States
            17th328th
                        
                    
        
            Vampire Numbers
            13th
                        
                    
                        
                    
        
            π
            32nd
                        
                    
                        
                    
        
            τ
            18th