12 Days of Christmas
40899 Bottles of Beer
403Abundant Numbers
700Arabic to Roman
500brainfuck
280Christmas Trees
632CSS Colors
174Cubes
439Diamonds
475Divisors
844Emirp Numbers
491Emojify
461Evil Numbers
800Fibonacci
947Fizz Buzz
869Happy Numbers
403Intersection
470Leap Years
642Leyland Numbers
69Look and Say
496Morse Decoder
332Morse Encoder
213Niven Numbers
759Odious Numbers
800Ordinal Numbers
641Pascal’s Triangle
549Pernicious Numbers
702Prime Numbers
645Quine
500Recamán
753Seven Segment
433Spelling Numbers
243Tongue-twisters
288United States
221π
314