UnderKoen (he/him) 🇳🇱

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12 Days of Christmas
260th
24 Game
54th
99 Bottles of Beer
223rd
Abundant Numbers
633rd
Abundant Numbers (Long)
440th
Arabic to Roman
321st
Arithmetic Numbers
1,073rd
Arrows
259th
Ascending Primes
251st
ASCII Table
125th
Billiards
88th
brainfuck
221st
Card Number Validation
103rd
Catalan Numbers
701st
Catalan’s Constant
112th
Christmas Trees
1,786th
Collatz
1,556th
CSS Colors
453rd
Cubes
48th
Day of Week
360th
DFA Simulator
125th
Diamonds
739th
Divisors
957th
Emirp Numbers
400th
Emirp Numbers (Long)
493rd
Emojify
465th
Evil Numbers
717th
Evil Numbers (Long)
868th
Factorial Factorisation
88th
Farey Sequence
340th
Fibonacci
2,204th
Fizz Buzz
1,807th
Foo Fizz Buzz Bar
746th
Forsyth–Edwards Notation
266th
Fractions
554th
Game of Life
142nd
Gijswijt’s Sequence
116th
Happy Numbers
388th
Happy Numbers (Long)
582nd
Hexdump
108th
Intersection
170th
Inventory Sequence
370th
ISBN
202nd
Jacobi Symbol
256th
Kaprekar Numbers
120th
Kolakoski Constant
100th
Kolakoski Sequence
758th
Leap Years
388th
Levenshtein Distance
445th
Leyland Numbers
298th
ln 2
417th
Look and Say
250th
Lucky Numbers
334th
Lucky Tickets
170th
Mahjong
72nd
Maze
105th
Medal Tally
96th
Morse Decoder
102nd
Morse Encoder
112th
Musical Chords
79th
N Queens
77th
Niven Numbers
1,092nd
Niven Numbers (Long)
705th
Number Spiral
248th
Odious Numbers
483rd
Odious Numbers (Long)
872nd
Ordinal Numbers
2nd
PalindromemordnilaP
241st
Pangram Grep
138th
Pascal’s Triangle
1,032nd
Pernicious Numbers
649th
Pernicious Numbers (Long)
787th
Poker
81st
Polyominoes
113th
Prime Numbers
783rd
Prime Numbers (Long)
1,773rd
Proximity Grid
99th
QR Decoder
91st
Quine
1,691st
Recamán
621st
Repeating Decimals
125th
Reverse Polish Notation
524th
Reversi
136th
Rijndael S-box
76th
Rock-paper-scissors-Spock-lizard
86th
Roman to Arabic
692nd
Rule 110
518th
Seven Segment
315th
SI Units
44th
Sierpiński Triangle
717th
Smith Numbers
530th
Spelling Numbers
185th
Star Wars Opening Crawl
344th
Sudoku
354th
Sudoku (Fill-in)
370th
Ten-pin Bowling
92nd
Time Distance
96th
Tongue-twisters
241st
Transpose Sentence
370th
United States
401st
Vampire Numbers
94th
Van Eck Sequence
460th
Zeckendorf Representation
339th
Zodiac Signs
352nd
γ
109th
λ
77th
π
402nd
τ
399th
φ
766th
√2
580th
𝑒
851st