12 Days of Christmas
8th
99 Bottles of Beer
10th
Abundant Numbers
14th
Abundant Numbers (Long)
15th
Arithmetic Numbers
15th
Ascending Primes
12th
brainfuck
34th
Catalan Numbers
24th
Collatz
19th
Divisors
19th
Emirp Numbers
21st
Emirp Numbers (Long)
7th
Evil Numbers
18th
Evil Numbers (Long)
17th
Farey Sequence
16th
Fibonacci
27th
Fizz Buzz
21st
Foo Fizz Buzz Bar
18th
Happy Numbers
33rd
Happy Numbers (Long)
28th
Kaprekar Numbers
11th
Leap Years
21st
Leyland Numbers
14th
Niven Numbers
24th
Niven Numbers (Long)
19th
Odious Numbers
22nd
Odious Numbers (Long)
17th
Pernicious Numbers
23rd
Pernicious Numbers (Long)
11th
Prime Numbers
16th
Prime Numbers (Long)
13th
Recamán
9th
Tongue-twisters
25th
Vampire Numbers
14th