12 Days of Christmas
99 Bottles of Beer
Abundant Numbers
Arabic to Roman
Arrows
brainfuck
Christmas Trees
CSS Colors
Cubes
Diamonds
Divisors
Emirp Numbers
Evil Numbers
Fibonacci
Fizz Buzz
Fractions
Happy Numbers
Happy Numbers (Long)
Kolakoski Constant
Kolakoski Sequence
Leap Years
Leyland Numbers
Look and Say
Niven Numbers
Odious Numbers
Ordinal Numbers
Pangram Grep
Pascal’s Triangle
Pernicious Numbers
Prime Numbers
Quine
1st
1st
24th
59th
61st
23rd
46th
21st
32nd
1st
28th
10th
25th
1st
264th
1st
1st
1st
19th
23rd
1st
42nd
45th
55th
12th
78th
1st
33rd
43rd
34th
12th
Recamán
Rule 110
Sierpiński Triangle
Smith Numbers
Tongue-twisters
United States
Vampire Numbers
Van Eck Sequence
λ
π
τ
φ
√2
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