12 Days of Christmas
410
Abundant Numbers
562
Catalan’s Constant
122
Collatz
627
Diamonds
382
Divisors
632
Emirp Numbers
373
Evil Numbers
401
Evil Numbers (Long)
389
Fibonacci
672
Fizz Buzz
677
Happy Numbers
338
Hexdump
451
Intersection
584
Leap Years
673
Lucky Numbers
271
Morse Decoder
88
Morse Encoder
210
Number Spiral
284
Odious Numbers
435
Odious Numbers (Long)
408
Pernicious Numbers (Long)
328
Prime Numbers
368
Recamán
457
Reverse Polish Notation
337
Smith Numbers
129