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    UnderKoen (he/him) 🇳🇱

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    12 Days of Christmas
    284th
    24 Game
    112th
    99 Bottles of Beer
    247th
    Abundant Numbers
    695th
    Abundant Numbers (Long)
    516th
    Arabic to Roman
    430th
    Arithmetic Numbers
    1,391st
    Arrows
    282nd
    Ascending Primes
    305th
    ASCII Table
    138th
    Billiards
    126th
    brainfuck
    215th
    Card Number Validation
    122nd
    Catalan Numbers
    703rd
    Catalan’s Constant
    121st
    Christmas Trees
    1,976th
    Collatz
    1,819th
    CSS Colors
    495th
    Cubes
    55th
    Day of Week
    444th
    DFA Simulator
    171st
    Diamonds
    980th
    Divisors
    1,057th
    Emirp Numbers
    440th
    Emirp Numbers (Long)
    402nd
    Emojify
    553rd
    Evil Numbers
    750th
    Evil Numbers (Long)
    1,058th
    Factorial Factorisation
    100th
    Farey Sequence
    265th
    Fibonacci
    2,405th
    Fizz Buzz
    1,220th
    Foo Fizz Buzz Bar
    637th
    Forsyth–Edwards Notation
    391st
    Fractions
    595th
    Game of Life
    164th
    Gijswijt’s Sequence
    131st
    Happy Numbers
    457th
    Happy Numbers (Long)
    692nd
    Hexdump
    132nd
    Hilbert Curve
    61st
    Intersection
    163rd
    Inventory Sequence
    408th
    ISBN
    225th
    Jacobi Symbol
    275th
    Kaprekar Numbers
    140th
    Kolakoski Constant
    91st
    Kolakoski Sequence
    819th
    Leap Years
    544th
    Levenshtein Distance
    493rd
    Leyland Numbers
    337th
    ln 2
    500th
    Look and Say
    257th
    Lucky Numbers
    440th
    Lucky Tickets
    198th
    Mahjong
    86th
    Mandelbrot
    455th
    Maze
    126th
    Medal Tally
    111th
    Minesweeper
    102nd
    Morse Decoder
    169th
    Morse Encoder
    190th
    Musical Chords
    92nd
    N Queens
    Niven Numbers
    1,105th
    Niven Numbers (Long)
    652nd
    Number Spiral
    293rd
    Odious Numbers
    531st
    Odious Numbers (Long)
    1,057th
    Ordinal Numbers
    2nd
    PalindromemordnilaP
    327th
    Pangram Grep
    174th
    Partition Numbers
    190th
    Pascal’s Triangle
    1,197th
    Pernicious Numbers
    792nd
    Pernicious Numbers (Long)
    961st
    Poker
    90th
    Polyominoes
    132nd
    Prime Numbers
    628th
    Prime Numbers (Long)
    2,134th
    Proximity Grid
    118th
    QR Decoder
    100th
    Quine
    1,790th
    Recamán
    666th
    Repeating Decimals
    149th
    Reverse Polish Notation
    632nd
    Reversi
    160th
    Rijndael S-box
    88th
    Rock-paper-scissors-Spock-lizard
    226th
    Roman to Arabic
    830th
    ROT13
    515th
    Rule 110
    592nd
    Scrambled Sort
    230th
    Set
    173rd
    Seven Segment
    340th
    SI Units
    99th
    Sierpiński Triangle
    800th
    Smith Numbers
    629th
    Spelling Numbers
    212th
    Star Wars GPT
    115th
    Star Wars Opening Crawl
    406th
    Sudoku
    411th
    Sudoku (Fill-in)
    443rd
    Ten-pin Bowling
    123rd
    Tic-tac-toe
    193rd
    Time Distance
    197th
    Tongue-twisters
    312th
    Topological Sort
    91st
    Tower of Hanoi
    812th
    Transpose Sentence
    471st
    Trinomial Triangle
    187th
    United States
    446th
    Vampire Numbers
    114th
    Van Eck Sequence
    538th
    Zeckendorf Representation
    415th
    Zodiac Signs
    417th
    γ
    125th
    λ
    83rd
    π
    475th
    τ
    452nd
    φ
    882nd
    √2
    664th
    𝑒
    984th