12 Days of Christmas
            
                        
                    466
                        
                    
        
            99 Bottles of Beer
            
                        
                    518
                        
                    
        
            Abundant Numbers
            
                        
                    750
                        
                    
        
            Arabic to Roman
            
                        
                    391
                        
                    
        
            Christmas Trees
            
                        
                    753
                        
                    
        
            CSS Colors
            
                        
                    109
                        
                    
        
            Cubes
            
                        
                    360
                        
                    
        
            Day of Week
            
                        
                    689
                        
                    
        
            Diamonds
            
                        
                    410
                        
                    
        
            Divisors
            
                        
                    710
                        
                    
        
            Emirp Numbers
            
                        
                    453
                        
                    
        
            Emojify
            
                        
                    375
                        
                    
        
            Evil Numbers
            
                        
                    514
                        
                    
        
            Fibonacci
            
                        
                    733
                        
                    
        
            Fizz Buzz
            5971,000651
        
            Happy Numbers
            
                        
                    459
                        
                    
        
            Intersection
            
                        
                    660
                        
                    
        
            Leap Years
            
                        
                    774
                        
                    
        
            Look and Say
            
                        
                    638
                        
                    
        
            Morse Decoder
            
                        
                    268
                        
                    
        
            Morse Encoder
            
                        
                    301
                        
                    
        
            Niven Numbers
            
                        
                    840
                        
                    
        
            Odious Numbers
            
                        
                    617
                        
                    
        
            Ordinal Numbers
            
                        
                    868
                        
                    
        
            Pangram Grep
            
                        
                    615
                        
                    
        
            Pascal’s Triangle
            
                        
                    536
                        
                    
        
            Pernicious Numbers
            
                        
                    486
                        
                    
        
            Poker
            
                        
                    289
                        
                    
        
            Prime Numbers
            
                        
                    507
                        
                    
        
            Quine
            
                        
                    893
                        
                    
        
            Rock-paper-scissors-Spock-lizard
            
                        
                    599
                        
                    
        
            Roman to Arabic
            
                        
                    632
                        
                    
        
            Rule 110
            
                        
                    427
                        
                    
        
            Seven Segment
            
                        
                    577
                        
                    
        
            Sierpiński Triangle
            
                        
                    285
                        
                    
        
            Spelling Numbers
            
                        
                    450
                        
                    
        
            Sudoku
            
                        
                    290
                        
                    
        
            Ten-pin Bowling
            
                        
                    392
                        
                    
        
            Tongue-twisters
            
                        
                    431
                        
                    
        
            United States
            
                        
                    339