12 Days of Christmas
99 Bottles of Beer
18th
Abundant Numbers
Arabic to Roman
Ascending Primes
brainfuck
7th
Christmas Trees
Divisors
Emirp Numbers
Emojify
Evil Numbers
49th
Fibonacci
40th
Fizz Buzz
31st
Intersection
Leap Years
94th
Niven Numbers
52nd
37th
56th
Odious Numbers
66th
Prime Numbers
Quine
89th
λ
20th
π
√2