Abundant Numbers
272
Abundant Numbers (Long)
301
Arabic to Roman
318
Arithmetic Numbers
314
Catalan Numbers
424
Collatz
570
Day of Week
642
Diamonds
193
Divisors
419
Evil Numbers
462
Evil Numbers (Long)
460
Fibonacci
634
Fizz Buzz
421
Foo Fizz Buzz Bar
374
Fractions
394
Happy Numbers
296
Happy Numbers (Long)
371
ISBN
255442
Jacobi Symbol
338
Leap Years
588
Leyland Numbers
284
ln 2
505
Morse Decoder
117
Niven Numbers
540
Odious Numbers
461
Odious Numbers (Long)
459
Pangram Grep
653
Pernicious Numbers
460
Pernicious Numbers (Long)
517
Prime Numbers
436
Prime Numbers (Long)
466
ROT13
189
π
155
𝑒
689