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 Alphabetic Numbers 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 Alphabetic Numbers 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 382nd lzahray 865 57 31ms 21 Oct 2022 382nd thehylian 865 57 11ms 10 Jan 2023 382nd 5cw 🇺🇸 865 57 11ms 10 Apr 2023 382nd xsot 🇸🇬 865 57 25ms 26 Apr 2023 382nd Rubiksmath 865 57 10ms 14 Aug 2023 382nd bzijlema 🇳🇱 865 57 11ms 15 Nov 2023 382nd janbehrens 🇩🇪 865 57 11ms 30 Dec 2023 382nd mathisfun271 865 57 10ms 4 Feb 2024 382nd thienudomsrirungruang 865 57 10ms 27 Apr 2024 382nd Seek64 🇩🇪 865 57 11ms 19 Jun 2024 382nd wuzekai518 865 57 11ms 2 Aug 2024 382nd bizy-coder 865 57 34ms 14 Aug 2024 382nd michaelmgreer 865 57 12ms 9 Oct 2025 382nd cros107 🇦🇺 865 57 11ms 31 Dec 2025 382nd KasperKivimaeki 🇫🇮 865 57 11ms 3 Jan 2026 382nd blaztoma 🇱🇹 865 57 11ms 11 Jan 2026 382nd ryyyn 🇺🇸 865 57 29ms 21 Jan 2026 382nd Flekay 🇩🇪 865 57 15ms 19 days ago 382nd JOrE20 865 57 12ms 10 days ago 382nd StefanHabel 🇨🇦 865 57 13ms 5 days ago 421st stefangimmillaro 865 79 94ms 21 Jun 2023 422nd janbehrens 🇩🇪 864 43 3ms 18 Jan 2021 423rd Shanethegamer 🇺🇸 864 53 1,258ms 23 May 2021 423rd MeWhenI 🇻🇦 864 53 1,291ms 16 Mar 2022 425th DaCuteRaccoon 863 54 10ms 9 Dec 2022 426th edsrzf 🇳🇿 862 53 1,416ms 31 Aug 2025 426th DialFrost 🇸🇬 862 53 940ms 1 Sep 2025 426th xsot 🇸🇬 862 53 1,028ms 21 Dec 2025 429th bitsandbeyond 🇳🇱 861 42 232ms 27 Oct 2025 430th sisyphus-ppcg 🇦🇺 861 56 2ms 12 Jul 2022 431st error256 861 72 62ms 11 Dec 2025 432nd DialFrost 🇸🇬 861 76 3ms 14 Sep 2024 433rd frosster 🇨🇦 859 71 2ms 27 Jan 2026 434th GrayJoKing 🇦🇺 859 96 32ms 18 Jan 2023 434th lynn 859 96 39ms 6 Aug 2023 436th sean-niemann 🇺🇸 857 58 106ms 27 Apr 2024 437th Irratix 🇳🇱 857 62 2ms 20 Dec 2021 437th ovs-code 🇩🇪 857 62 2ms 8 May 2023 437th sean-niemann 🇺🇸 857 62 2ms 18 Dec 2023 440th inventshah 857 83 54ms 17 Nov 2022 440th ovs-code 🇩🇪 857 83 55ms 3 Jun 2024 440th DialFrost 🇸🇬 857 83 55ms 7 Nov 2025 443rd Lydxn 🇨🇦 857 100 25ms 13 Oct 2023 444th primo-ppcg 🇹🇭 857 195 11ms 2 Aug 2023 445th MeWhenI 🇻🇦 856 78 473ms 7 Nov 2025 446th Lydxn 🇨🇦 854 63 2ms 15 Jan 2024 446th JayXon 🇺🇸 854 63 2ms 29 Jan 2024 446th rucin93 🇵🇱 854 63 2ms 19 Nov 2025 449th primo-ppcg 🇹🇭 854 78 124ms 27 Mar 2021 449th Shanethegamer 🇺🇸 854 78 128ms 18 Mar 2023 449th Ripick 854 78 123ms 2 Jun 2025 452nd sean-niemann 🇺🇸 854 80 94ms 21 Sep 2023 452nd Yewzir 🇧🇪 854 80 82ms 16 Nov 2023 454th snoozingnewt 🇨🇦 854 101 113ms 5 Dec 2025 455th Yewzir 🇧🇪 854 130 1,746ms 27 Apr 2024 456th Steffan153 🇫🇮 852 77 4ms 1 Nov 2023 457th MeWhenI 🇻🇦 852 84 40ms 29 Apr 2025 458th Shanethegamer 🇺🇸 851 67 2,205ms 27 Oct 2024 459th MeWhenI 🇻🇦 851 70 417ms 21 Nov 2021 460th kg583 🇺🇸 851 86 9ms 1 Sep 2025 461st ovs-code 🇩🇪 851 138 1,484ms 17 Feb 2025 462nd Espiobest 850 58 11ms 13 Mar 2021 462nd fgrosshans 🇫🇷 850 58 10ms 18 Jul 2022 462nd MaxElf999 850 58 10ms 3 Oct 2022 462nd Alex-x90 🇺🇸 850 58 30ms 23 Mar 2023 462nd Natanaelel 🇸🇪 850 58 11ms 11 Apr 2023 462nd InigoK 🇺🇸 850 58 28ms 28 May 2023 462nd Kacarott 🇦🇺 850 58 28ms 13 Oct 2023 462nd m42km 850 58 28ms 25 Nov 2023 462nd NickTheEASDude 🇺🇸 850 58 27ms 1 Jul 2024 462nd namelessiw 850 58 30ms 27 Jul 2024 462nd edsrzf 🇳🇿 850 58 19ms 22 Nov 2024 462nd croc54 850 58 30ms 9 Jan 2025 462nd andrewjc2000 850 58 29ms 11 Mar 2025 462nd wuduculfre 850 58 29ms 22 Jul 2025 462nd robin-scragg 850 58 12ms 21 Oct 2025 477th albanian-laundromat 850 77 9ms 22 Oct 2025 478th MeWhenI 🇻🇦 849 65 7ms 24 Dec 2024 479th ovs-code 🇩🇪 849 73 67ms 17 Sep 2023 480th sisyphus-ppcg 🇦🇺 848 89 119ms 25 Jan 2021 First Prev 401–480 of 1,907 Next Last