12 Days of Christmas
609
Abundant Numbers
649
Christmas Trees
416
Divisors
877
Emirp Numbers
319
Evil Numbers
467
Fibonacci
818
Fizz Buzz
482
598
Happy Numbers
264
Leap Years
652
Morse Decoder
242
Morse Encoder
315
Niven Numbers
484
Odious Numbers
468
Ordinal Numbers
Pangram Grep
521
Pascalβs Triangle
584
Pernicious Numbers
349
Prime Numbers
684
Seven Segment
377
Spelling Numbers
494