12 Days of Christmas
99 Bottles of Beer
Abundant Numbers
Arabic to Roman
brainfuck
2nd
9th
Catalan Numbers
Christmas Trees
Cubes
Diamonds
Divisors
Emirp Numbers
Emojify
Evil Numbers
Fibonacci
Fizz Buzz
56th
83rd
Foo Fizz Buzz Bar
Fractions
Intersection
ISBN
Leap Years
Leyland Numbers
Look and Say
Niven Numbers
Niven Numbers (Long)
Odious Numbers
Ordinal Numbers
Pangram Grep
Pascal’s Triangle
Pernicious Numbers
Prime Numbers
23rd
20th
Prime Numbers (Long)
Quine
121st
109th
Recamán
Reverse Polish Notation
4th
1st
Rock-paper-scissors-Spock-lizard
Rule 110
Seven Segment
Sierpiński Triangle
Smith Numbers
Tongue-twisters
Van Eck Sequence