12 Days of Christmas
172
99 Bottles of Beer
22
606
Abundant Numbers
540
Arabic to Roman
433
Christmas Trees
617
Collatz
619
Cubes
454
Diamonds
544
Divisors
701
Emirp Numbers
543
Fibonacci
450
Fizz Buzz
506
Foo Fizz Buzz Bar
611
Fractions
396
Happy Numbers
387
Happy Numbers (Long)
443
Kolakoski Sequence
628
Leap Years
695
Leyland Numbers
628
Look and Say
626
Ordinal Numbers
500
Pascal’s Triangle
484
Recamán
592