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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 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 ArkScript 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 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 ArkScript 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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 381st thehylian 865 57 11ms 10 Jan 2023 381st 5cw 🇺🇸 865 57 11ms 10 Apr 2023 381st xsot 🇸🇬 865 57 25ms 26 Apr 2023 381st Rubiksmath 865 57 10ms 14 Aug 2023 381st bzijlema 🇳🇱 865 57 11ms 15 Nov 2023 381st janbehrens 🇩🇪 865 57 11ms 30 Dec 2023 381st mathisfun271 865 57 10ms 4 Feb 2024 381st thienudomsrirungruang 865 57 10ms 27 Apr 2024 381st Seek64 🇩🇪 865 57 11ms 19 Jun 2024 381st wuzekai518 865 57 11ms 2 Aug 2024 381st bizy-coder 865 57 34ms 14 Aug 2024 381st michaelmgreer 865 57 12ms 9 Oct 2025 381st cros107 🇦🇺 865 57 11ms 31 Dec 2025 381st KasperKivimaeki 🇫🇮 865 57 11ms 3 Jan 2026 381st blaztoma 🇱🇹 865 57 11ms 11 Jan 2026 381st ryyyn 🇺🇸 865 57 29ms 21 Jan 2026 381st Flekay 🇩🇪 865 57 15ms 14 days ago 381st JOrE20 865 57 12ms 4 days ago 381st StefanHabel 🇨🇦 865 57 13ms 91 mins ago 420th stefangimmillaro 865 79 94ms 21 Jun 2023 421st janbehrens 🇩🇪 864 43 3ms 18 Jan 2021 422nd Shanethegamer 🇺🇸 864 53 1,258ms 23 May 2021 422nd MeWhenI 🇻🇦 864 53 1,291ms 16 Mar 2022 424th DaCuteRaccoon 863 54 10ms 9 Dec 2022 425th edsrzf 🇳🇿 862 53 1,416ms 31 Aug 2025 425th DialFrost 🇸🇬 862 53 940ms 1 Sep 2025 425th xsot 🇸🇬 862 53 1,028ms 21 Dec 2025 428th bitsandbeyond 🇳🇱 861 42 232ms 27 Oct 2025 429th sisyphus-ppcg 🇦🇺 861 56 2ms 12 Jul 2022 430th error256 861 72 62ms 11 Dec 2025 431st DialFrost 🇸🇬 861 76 3ms 14 Sep 2024 432nd frosster 🇨🇦 859 71 2ms 27 Jan 2026 433rd GrayJoKing 🇦🇺 859 96 32ms 18 Jan 2023 433rd lynn 859 96 39ms 6 Aug 2023 435th sean-niemann 🇺🇸 857 58 106ms 27 Apr 2024 436th Irratix 🇳🇱 857 62 2ms 20 Dec 2021 436th ovs-code 🇩🇪 857 62 2ms 8 May 2023 436th sean-niemann 🇺🇸 857 62 2ms 18 Dec 2023 439th inventshah 857 83 54ms 17 Nov 2022 439th ovs-code 🇩🇪 857 83 55ms 3 Jun 2024 439th DialFrost 🇸🇬 857 83 57ms 7 Nov 2025 442nd Lydxn 🇨🇦 857 100 25ms 13 Oct 2023 443rd primo-ppcg 🇹🇭 857 195 11ms 2 Aug 2023 444th MeWhenI 🇻🇦 856 78 473ms 7 Nov 2025 445th Lydxn 🇨🇦 854 63 2ms 15 Jan 2024 445th JayXon 🇺🇸 854 63 2ms 29 Jan 2024 445th rucin93 🇵🇱 854 63 2ms 19 Nov 2025 448th primo-ppcg 🇹🇭 854 78 124ms 27 Mar 2021 448th Shanethegamer 🇺🇸 854 78 128ms 18 Mar 2023 448th Ripick 854 78 130ms 2 Jun 2025 451st sean-niemann 🇺🇸 854 80 99ms 21 Sep 2023 451st Yewzir 🇧🇪 854 80 82ms 16 Nov 2023 453rd snoozingnewt 🇨🇦 854 101 117ms 5 Dec 2025 454th Yewzir 🇧🇪 854 130 1,746ms 27 Apr 2024 455th Steffan153 🇫🇮 852 77 4ms 1 Nov 2023 456th MeWhenI 🇻🇦 852 84 40ms 29 Apr 2025 457th Shanethegamer 🇺🇸 851 67 2,205ms 27 Oct 2024 458th MeWhenI 🇻🇦 851 70 417ms 21 Nov 2021 459th kg583 🇺🇸 851 86 9ms 1 Sep 2025 460th ovs-code 🇩🇪 851 138 1,406ms 17 Feb 2025 461st Espiobest 850 58 11ms 13 Mar 2021 461st fgrosshans 🇫🇷 850 58 10ms 18 Jul 2022 461st MaxElf999 850 58 10ms 3 Oct 2022 461st Alex-x90 🇺🇸 850 58 30ms 23 Mar 2023 461st Natanaelel 🇸🇪 850 58 11ms 11 Apr 2023 461st InigoK 🇺🇸 850 58 28ms 28 May 2023 461st Kacarott 🇦🇺 850 58 28ms 13 Oct 2023 461st m42km 850 58 28ms 25 Nov 2023 461st NickTheEASDude 🇺🇸 850 58 27ms 1 Jul 2024 461st namelessiw 850 58 30ms 27 Jul 2024 461st edsrzf 🇳🇿 850 58 19ms 22 Nov 2024 461st croc54 850 58 30ms 9 Jan 2025 461st andrewjc2000 850 58 29ms 11 Mar 2025 461st wuduculfre 850 58 29ms 22 Jul 2025 461st robin-scragg 850 58 12ms 21 Oct 2025 476th albanian-laundromat 850 77 9ms 22 Oct 2025 477th MeWhenI 🇻🇦 849 65 7ms 24 Dec 2024 478th ovs-code 🇩🇪 849 73 67ms 17 Sep 2023 479th sisyphus-ppcg 🇦🇺 848 89 117ms 25 Jan 2021 479th Bubbler-4 848 89 117ms 1 Jul 2021 First Prev 401–480 of 1,905 Next Last