12 Days of Christmas
413
Abundant Numbers
565
Catalan’s Constant
123
Collatz
628
Diamonds
385
Divisors
637
Emirp Numbers
375
Evil Numbers
409
Evil Numbers (Long)
397
Fibonacci
673
Fizz Buzz
678
Happy Numbers
341
Hexdump
449
Intersection
587
Leap Years
687
Lucky Numbers
273
Morse Decoder
90
Morse Encoder
212
Number Spiral
285
Odious Numbers
445
Odious Numbers (Long)
417
Pernicious Numbers (Long)
333
Prime Numbers
368
Recamán
462
Reverse Polish Notation
334
Smith Numbers
130