12 Days of Christmas
99 Bottles of Beer
Abundant Numbers
Abundant Numbers (Long)
Arabic to Roman
Arithmetic Numbers
Arrows
ASCII Table
Catalan Numbers
Christmas Trees
Collatz
Cubes
Diamonds
Divisors
Emirp Numbers
Emojify
Evil Numbers
Evil Numbers (Long)
Factorial Factorisation
Fibonacci
Fizz Buzz
Foo Fizz Buzz Bar
Happy Numbers
Happy Numbers (Long)
ISBN
Leap Years
Leyland Numbers
Lucky Numbers
N Queens
Niven Numbers
Niven Numbers (Long)
Odious Numbers
Odious Numbers (Long)
Ordinal Numbers
Pangram Grep
Pascal’s Triangle
Pernicious Numbers
Pernicious Numbers (Long)
Prime Numbers
Prime Numbers (Long)
Quine
Recamán
Rijndael S-box
Rule 110
Seven Segment
Sierpiński Triangle
Sudoku
Time Distance
Tongue-twisters
United States
Van Eck Sequence
π
31st
18th
11th
19th
14th
50th
109th
60th
53rd
21st
37th
12th
27th
22nd
11th
31st
11th
17th
√2
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