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Kolakoski Sequence in all languages in chars. Achievements Cheevos Holes Languages Medals Miscellaneous All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Gray Code Decoder Gray Code Encoder Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Gray Code Decoder Gray Code Encoder Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 398th hiddicop 🇸🇪 865 57 12ms 29 Jan 2021 398th lynn 865 57 15ms 6 Mar 2021 398th vezzick 865 57 11ms 8 Mar 2021 398th kops-cg 865 57 11ms 8 Apr 2021 398th clementblaudeau 865 57 11ms 1 Jun 2021 398th jared-hughes 865 57 12ms 14 Aug 2021 398th michelebastione 🇮🇹 865 57 14ms 16 Aug 2021 398th Indivicivet 865 57 11ms 26 Oct 2021 398th bricknellj 865 57 15ms 14 Jan 2022 398th scpchicken 🇵🇼 865 57 11ms 12 Mar 2022 398th pascscha 865 57 15ms 28 Apr 2022 398th jgygax 865 57 17ms 28 Apr 2022 398th stefangimmillaro 865 57 11ms 13 May 2022 398th ZakkkkAttackkkk 🇵🇭 865 57 15ms 31 Jul 2022 398th inventshah 865 57 11ms 19 Sep 2022 398th LogicalJoe 865 57 13ms 19 Sep 2022 398th lzahray 865 57 36ms 21 Oct 2022 398th thehylian 865 57 11ms 10 Jan 2023 398th 5cw 🇺🇸 865 57 11ms 10 Apr 2023 398th xsot 🇸🇬 865 57 25ms 26 Apr 2023 398th Rubiksmath 865 57 12ms 14 Aug 2023 398th bzijlema 🇳🇱 865 57 14ms 15 Nov 2023 398th janbehrens 🇩🇪 865 57 13ms 30 Dec 2023 398th mathisfun271 865 57 11ms 4 Feb 2024 398th thienudomsrirungruang 865 57 11ms 27 Apr 2024 398th wuzekai518 865 57 12ms 2 Aug 2024 398th bizy-coder 865 57 36ms 14 Aug 2024 398th michaelmgreer 865 57 11ms 9 Oct 2025 398th cros107 🇦🇺 865 57 15ms 31 Dec 2025 398th KasperKivimaeki 🇫🇮 865 57 14ms 3 Jan 2026 398th blaztoma 🇱🇹 865 57 12ms 11 Jan 2026 398th ryyyn 🇺🇸 865 57 36ms 21 Jan 2026 398th Flekay 🇩🇪 865 57 13ms 15 Feb 2026 398th JOrE20 865 57 14ms 25 Feb 2026 398th StefanHabel 🇨🇦 865 57 13ms 1 Mar 2026 398th edsrzf 🇳🇿 865 57 12ms 22 days ago 398th vang1ong7ang 865 57 13ms 2 days ago 438th DialFrost 🇸🇬 865 76 3ms 14 Sep 2024 439th janbehrens 🇩🇪 864 43 3ms 18 Jan 2021 440th blaztoma 🇱🇹 863 46 6ms 11 Mar 2026 441st edsrzf 🇳🇿 863 53 834ms 31 Aug 2025 441st DialFrost 🇸🇬 863 53 794ms 1 Sep 2025 441st xsot 🇸🇬 863 53 821ms 21 Dec 2025 444th DaCuteRaccoon 863 54 10ms 9 Dec 2022 445th error256 863 72 62ms 11 Dec 2025 446th snoozingnewt 🇨🇦 863 96 107ms 5 days ago 446th edsrzf 🇳🇿 863 96 102ms 5 days ago 448th JayXon 🇺🇸 863 131 1,687ms 12 days ago 449th bitsandbeyond 🇳🇱 862 42 276ms 27 Oct 2025 450th sisyphus-ppcg 🇦🇺 862 56 2ms 12 Jul 2022 451st GrayJoKing 🇦🇺 862 96 32ms 18 Jan 2023 451st lynn 862 96 39ms 6 Aug 2023 453rd frosster 🇨🇦 861 71 2ms 27 Jan 2026 454th GrayJoKing 🇦🇺 861 79 13ms 7 Mar 2026 454th emgordon154 861 79 12ms 8 Mar 2026 456th Lydxn 🇨🇦 860 100 25ms 13 Oct 2023 457th primo-ppcg 🇹🇭 860 195 11ms 2 Aug 2023 458th sean-niemann 🇺🇸 859 58 155ms 27 Apr 2024 459th inventshah 858 83 64ms 17 Nov 2022 459th ovs-code 🇩🇪 858 83 55ms 3 Jun 2024 459th DialFrost 🇸🇬 858 83 59ms 7 Nov 2025 462nd Irratix 🇳🇱 857 62 2ms 20 Dec 2021 462nd ovs-code 🇩🇪 857 62 2ms 8 May 2023 462nd sean-niemann 🇺🇸 857 62 2ms 18 Dec 2023 465th primo-ppcg 🇹🇭 857 78 134ms 27 Mar 2021 465th Shanethegamer 🇺🇸 857 78 137ms 18 Mar 2023 465th Ripick 857 78 134ms 2 Jun 2025 465th MeWhenI 🇻🇦 857 78 478ms 7 Nov 2025 469th sean-niemann 🇺🇸 857 80 103ms 21 Sep 2023 469th Yewzir 🇧🇪 857 80 102ms 16 Nov 2023 471st DialFrost 🇸🇬 856 132 1,636ms 12 days ago 472nd Lydxn 🇨🇦 855 63 2ms 15 Jan 2024 472nd JayXon 🇺🇸 855 63 2ms 29 Jan 2024 472nd rucin93 🇵🇱 855 63 2ms 19 Nov 2025 475th MeWhenI 🇻🇦 855 65 7ms 24 Dec 2024 476th ovs-code 🇩🇪 855 138 1,213ms 17 Feb 2025 477th MeWhenI 🇻🇦 854 84 40ms 29 Apr 2025 478th Shanethegamer 🇺🇸 853 67 2,525ms 27 Oct 2024 479th GolfingSuccess 🇬🇷 853 106 4ms 22 days ago 480th MeWhenI 🇻🇦 852 70 412ms 21 Nov 2021 481st kg583 🇺🇸 852 86 11ms 1 Sep 2025 482nd ovs-code 🇩🇪 851 73 67ms 17 Sep 2023 483rd sisyphus-ppcg 🇦🇺 851 89 121ms 25 Jan 2021 483rd Bubbler-4 851 89 120ms 1 Jul 2021 485th Espiobest 850 58 11ms 13 Mar 2021 485th fgrosshans 🇫🇷 850 58 13ms 18 Jul 2022 485th MaxElf999 850 58 11ms 3 Oct 2022 485th Alex-x90 🇺🇸 850 58 31ms 23 Mar 2023 485th Natanaelel 🇸🇪 850 58 12ms 11 Apr 2023 485th InigoK 🇺🇸 850 58 32ms 28 May 2023 485th Kacarott 🇦🇺 850 58 36ms 13 Oct 2023 485th m42km 850 58 32ms 25 Nov 2023 485th NickTheEASDude 🇺🇸 850 58 31ms 1 Jul 2024 485th namelessiw 850 58 31ms 27 Jul 2024 485th croc54 850 58 30ms 9 Jan 2025 485th andrewjc2000 850 58 30ms 11 Mar 2025 485th wuduculfre 850 58 31ms 22 Jul 2025 485th robin-scragg 850 58 14ms 21 Oct 2025 499th Shanethegamer 🇺🇸 850 77 82ms 9 Jun 2022 500th jared-hughes 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