12 Days of Christmas
79
Abundant Numbers
475
Arabic to Roman
361
Collatz
705
Divisors
752
Emirp Numbers
364
Evil Numbers
834
Evil Numbers (Long)
814
Fibonacci
932
Fizz Buzz
348
Foo Fizz Buzz Bar
516
Fractions
416
Happy Numbers
394
Happy Numbers (Long)
424
Leap Years
722741
Niven Numbers
715
Niven Numbers (Long)
780
Odious Numbers
797
Odious Numbers (Long)
778
Pascal’s Triangle
797
Pernicious Numbers
348
Prime Numbers
688
Recamán
539
Smith Numbers
538
Van Eck Sequence
473
π
56
τ
56
φ
744750