12 Days of Christmas
577
Abundant Numbers
607
Christmas Trees
381
Divisors
817
Emirp Numbers
300
Evil Numbers
434
Fibonacci
774
Fizz Buzz
478577
Happy Numbers
249
Leap Years
617
Morse Decoder
215
Morse Encoder
279
Niven Numbers
451
Odious Numbers
435
Ordinal Numbers
Pangram Grep
474
Pascalβs Triangle
524
Pernicious Numbers
325
Prime Numbers
636
Seven Segment
333
Spelling Numbers
437