12 Days of Christmas
413
Abundant Numbers
565
Catalan’s Constant
123
Collatz
629
Diamonds
385
Divisors
638
Emirp Numbers
375
Evil Numbers
410
Evil Numbers (Long)
398
Fibonacci
673
Fizz Buzz
678
Happy Numbers
341
Hexdump
449
Intersection
588
Leap Years
687
Lucky Numbers
274
Morse Decoder
90
Morse Encoder
212
Number Spiral
285
Odious Numbers
446
Odious Numbers (Long)
418
Pernicious Numbers (Long)
334
Prime Numbers
368
Recamán
463
Reverse Polish Notation
335
Smith Numbers
130