12 Days of Christmas
            
                        
                    
                        
                    106th
        
            99 Bottles of Beer
            
                        
                    
                        
                    95th
        
            Abundant Numbers
            
                        
                    
                        
                    39th
        
            Arabic to Roman
            
                        
                    
                        
                    45th
        
            brainfuck
            
                        
                    18th118th
        
            Christmas Trees
            
                        
                    20th127th
        
            Cubes
            
                        
                    
                        
                    160th
        
            Diamonds
            
                        
                    
                        
                    32nd
        
            Divisors
            160th37th1st
        
            Emirp Numbers
            
                        
                    
                        
                    100th
        
            Evil Numbers
            
                        
                    22nd130th
        
            Fibonacci
            
                        
                    49th179th
        
            Fizz Buzz
            278th9th54th
        
            Happy Numbers
            
                        
                    
                        
                    55th
        
            Leap Years
            111th40th51st
        
            Morse Decoder
            
                        
                    
                        
                    98th
        
            Morse Encoder
            
                        
                    
                        
                    26th
        
            Niven Numbers
            
                        
                    
                        
                    69th
        
            Odious Numbers
            
                        
                    
                        
                    292nd
        
            Ordinal Numbers
            
                        
                    
                        
                    4th
        
            Pangram Grep
            
                        
                    21st173rd
        
            Pascal’s Triangle
            
                        
                    
                        
                    120th
        
            Pernicious Numbers
            
                        
                    
                        
                    185th
        
            Poker
            
                        
                    
                        
                    33rd
        
            Prime Numbers
            
                        
                    
                        
                    242nd
        
            Quine
            
                        
                    
                        
                    70th
        
            Rock-paper-scissors-Spock-lizard
            
                        
                    
                        
                    59th
        
            Roman to Arabic
            
                        
                    
                        
                    81st
        
            Rule 110
            
                        
                    
                        
                    114th
        
            Seven Segment
            
                        
                    
                        
                    76th
        
            Sierpiński Triangle
            
                        
                    
                        
                    60th
        
            Spelling Numbers
            
                        
                    
                        
                    49th
        
            Sudoku
            
                        
                    
                        
                    28th
        
            Ten-pin Bowling
            
                        
                    
                        
                    
                        
                    
        
            λ
            
                        
                    
                        
                    127th
        
            π
            
                        
                    
                        
                    99th
        
            τ
            
                        
                    
                        
                    92nd
        
            φ
            
                        
                    
                        
                    105th
        
            √2
            
                        
                    
                        
                    386th
        
            𝑒
            
                        
                    
                        
                    210th