12 Days of Christmas
791
99 Bottles of Beer
663
Arabic to Roman
571
Christmas Trees
422
Divisors
664
Emirp Numbers
571
Evil Numbers
462
Fibonacci
658
Fizz Buzz
749
Happy Numbers
526
Niven Numbers
541
Odious Numbers
489
Pascal’s Triangle
483
Pernicious Numbers
462
Prime Numbers
568
Quine
968
Roman to Arabic
336
Seven Segment
319
Sierpiński Triangle
409
π
96