12 Days of Christmas
50
Abundant Numbers
562
Catalan’s Constant
121
Collatz
627
Diamonds
359
Divisors
632
Emirp Numbers
373
Evil Numbers
401
Evil Numbers (Long)
389
Fibonacci
672
Fizz Buzz
677
Happy Numbers
338
Hexdump
443
Intersection
526
Leap Years
673
Lucky Numbers
270
Morse Decoder
88
Morse Encoder
189
Number Spiral
267
Odious Numbers
427
Odious Numbers (Long)
400
Pernicious Numbers (Long)
329
Prime Numbers
368
Recamán
458
Reverse Polish Notation
335
Smith Numbers
128