Abundant Numbers
673
Abundant Numbers (Long)
660
Arabic to Roman
340
Arithmetic Numbers
677
Billiards
542
Christmas Trees
580
Collatz
661777
Cubes
342
Diamonds
377
Divisors
645680
Evil Numbers
608
Evil Numbers (Long)
592
Fibonacci
722837
Fizz Buzz
560
Leap Years
717789
Niven Numbers
647
Niven Numbers (Long)
628
Number Spiral
352
Odious Numbers
616
Odious Numbers (Long)
622
Pascal’s Triangle
501
Prime Numbers
623
Prime Numbers (Long)
583
Sierpiński Triangle
215
Tongue-twisters
501