12 Days of Christmas
791
99 Bottles of Beer
664
Arabic to Roman
570
Christmas Trees
421
Divisors
664
Emirp Numbers
570
Evil Numbers
462
Fibonacci
657
Fizz Buzz
748
Happy Numbers
525
Niven Numbers
541
Odious Numbers
488
Pascal’s Triangle
482
Pernicious Numbers
461
Prime Numbers
568
Quine
967
Roman to Arabic
445
Seven Segment
319
Sierpiński Triangle
409
π
96