petar-donchev

12 Days of Christmas

Abundant Numbers

Christmas Trees

Diamonds

Divisors

Emirp Numbers

Evil Numbers

Fibonacci

Fizz Buzz

Happy Numbers

Leap Years

Leyland Numbers

Morse Decoder

Morse Encoder

Niven Numbers

Odious Numbers

Ordinal Numbers

Pangram Grep

Pascal’s Triangle

Pernicious Numbers

Prime Numbers

Recamán

Rock-paper-scissors-Spock-lizard

Seven Segment

Sierpiński Triangle

φ

√2

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