12 Days of Christmas
77799 Bottles of Beer
589Abundant Numbers
693Arabic to Roman
300Christmas Trees
723CSS Colors
223Cubes
554Diamonds
340Divisors
750Emirp Numbers
504Evil Numbers
741Fibonacci
717
318
800Fizz Buzz
763Happy Numbers
428Leap Years
597Levenshtein Distance
332Look and Say
602Morse Decoder
310Morse Encoder
117Niven Numbers
667Odious Numbers
543
741Ordinal Numbers
628Pangram Grep
750Pascal’s Triangle
563Pernicious Numbers
678Prime Numbers
439
556Roman to Arabic
478Seven Segment
516Sierpiński Triangle
198Tongue-twisters
548United States
178