12 Days of Christmas
24 Game
99 Bottles of Beer
Abundant Numbers
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Abundant Numbers (Long)
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Arabic to Roman
Arithmetic Numbers
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Arrows
2nd
Ascending Primes
2nd
ASCII Table
brainfuck
Card Number Validation
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Catalan Numbers
Catalan’s Constant
Christmas Trees
Collatz
1st
CSS Colors
2nd
Cubes
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Day of Week
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Diamonds
Divisors
1st
Emirp Numbers
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Emirp Numbers (Long)
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Emojify
4th
Evil Numbers
1st
Evil Numbers (Long)
1st
Factorial Factorisation
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Farey Sequence
Fibonacci
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Fizz Buzz
2nd
Foo Fizz Buzz Bar
3rd
Fractions
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Gijswijt’s Sequence
Happy Numbers
1st
Happy Numbers (Long)
1st
Hexdump
Intersection
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ISBN
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9th
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Jacobi Symbol
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Kaprekar Numbers
1st
Kolakoski Constant
Kolakoski Sequence
5th
Leap Years
1st
Leyland Numbers
2nd
ln 2
Look and Say
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Lucky Numbers
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Lucky Tickets
5th
Medal Tally
Morse Encoder
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N Queens
Niven Numbers
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Niven Numbers (Long)
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Number Spiral
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Odious Numbers
1st
Odious Numbers (Long)
1st
Ordinal Numbers
4th
PalindromemordnilaP
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Pangram Grep
2nd
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8th
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Pascal’s Triangle
3rd
Pernicious Numbers
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Pernicious Numbers (Long)
1st
Prime Numbers
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Prime Numbers (Long)
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Recamán
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Repeating Decimals
Reverse Polish Notation
3rd
Rijndael S-box
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2nd
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2nd
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Roman to Arabic
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Rule 110
4th
Seven Segment
Sierpiński Triangle
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Smith Numbers
2nd
Star Wars Opening Crawl
Tongue-twisters
Transpose Sentence
2nd
United States
Vampire Numbers
Van Eck Sequence
2nd
Zeckendorf Representation
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Zodiac Signs
2nd
π
τ
φ
√2
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