12 Days of Christmas
77699 Bottles of Beer
351Arabic to Roman
378Christmas Trees
581Cubes
391Diamonds
250Divisors
518Emirp Numbers
370Evil Numbers
282Fibonacci
419Fizz Buzz
408Happy Numbers
305Leap Years
551Morse Decoder
180Niven Numbers
537Odious Numbers
278Pangram Grep
391Pascalβs Triangle
289Pernicious Numbers
225Prime Numbers
396Roman to Arabic
422