12 Days of Christmas
42799 Bottles of Beer
459Abundant Numbers
543Christmas Trees
681Collatz
649Divisors
552Emirp Numbers
261Emojify
238Evil Numbers
385Evil Numbers (Long)
45Fibonacci
509Fizz Buzz
545Foo Fizz Buzz Bar
723Happy Numbers
321Leap Years
520Look and Say
139Niven Numbers
528Niven Numbers (Long)
691Odious Numbers
387Ordinal Numbers
596Pangram Grep
407Pernicious Numbers
355Prime Numbers
491RecamΓ‘n
395Seven Segment
457Spelling Numbers
289Time Distance
248Tongue-twisters
296United States
167