12 Days of Christmas
            
                        
                    
                        
                    
                        
                    786
        
            Abundant Numbers
            
                        
                    
                        
                    
                        
                    718
        
            Arabic to Roman
            
                        
                    
                        
                    
                        
                    566
        
            brainfuck
            
                        
                    
                        
                    
                        
                    647
        
            Collatz
            669
                        
                    
                        
                    919
        
            CSS Colors
            
                        
                    
                        
                    
                        
                    114
        
            Divisors
            
                        
                    
                        
                    
                        
                    1,000
        
            Emojify
            
                        
                    486
                        
                    548
        
            Evil Numbers
            
                        
                    
                        
                    
                        
                    755
        
            Fibonacci
            
                        
                    773719947
        
            Fizz Buzz
            
                        
                    
                        
                    
                        
                    983
        
            Fractions
            
                        
                    
                        
                    
                        
                    608
        
            Happy Numbers
            
                        
                    
                        
                    
                        
                    496
        
            Look and Say
            
                        
                    
                        
                    
                        
                    552
        
            Niven Numbers (Long)
            667
                        
                    
                        
                    562
        
            Number Spiral
            651
                        
                    
                        
                    408
        
            Pascal’s Triangle
            
                        
                    
                        
                    
                        
                    806
        
            Prime Numbers (Long)
            
                        
                    
                        
                    
                        
                    579
        
            Sierpiński Triangle
            
                        
                    
                        
                    
                        
                    687
        
            π
            
                        
                    
                        
                    
                        
                    323
        
            √2
            
                        
                    
                        
                    
                        
                    690