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 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 Continued Fractions 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 ><> 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 ALGOL 68 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 ><> 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 ALGOL 68 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 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 Continued Fractions 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 379th xsot 🇸🇬 865 57 25ms 26 Apr 2023 379th Rubiksmath 865 57 10ms 14 Aug 2023 379th bzijlema 🇳🇱 865 57 11ms 15 Nov 2023 379th janbehrens 🇩🇪 865 57 11ms 30 Dec 2023 379th mathisfun271 865 57 11ms 4 Feb 2024 379th thienudomsrirungruang 865 57 11ms 27 Apr 2024 379th Seek64 🇩🇪 865 57 11ms 19 Jun 2024 379th wuzekai518 865 57 11ms 2 Aug 2024 379th bizy-coder 865 57 35ms 14 Aug 2024 379th michaelmgreer 865 57 12ms 9 Oct 2025 379th cros107 🇦🇺 865 57 11ms 31 Dec 2025 379th KasperKivimaeki 🇫🇮 865 57 11ms 3 Jan 2026 379th blaztoma 🇱🇹 865 57 11ms 11 Jan 2026 379th ryyyn 🇺🇸 865 57 31ms 20 days ago 415th stefangimmillaro 865 79 97ms 21 Jun 2023 416th janbehrens 🇩🇪 864 43 3ms 18 Jan 2021 417th Shanethegamer 🇺🇸 864 53 1,258ms 23 May 2021 417th MeWhenI 🇻🇦 864 53 1,291ms 16 Mar 2022 419th DaCuteRaccoon 863 54 10ms 9 Dec 2022 420th bitsandbeyond 🇳🇱 861 42 241ms 27 Oct 2025 421st sisyphus-ppcg 🇦🇺 861 56 2ms 12 Jul 2022 422nd error256 861 72 62ms 11 Dec 2025 423rd DialFrost 🇸🇬 861 76 3ms 14 Sep 2024 424th edsrzf 🇳🇿 859 53 1,416ms 31 Aug 2025 424th DialFrost 🇸🇬 859 53 940ms 1 Sep 2025 424th xsot 🇸🇬 859 53 1,044ms 21 Dec 2025 427th frosster 859 71 2ms 14 days ago 428th GrayJoKing 🇦🇺 859 96 33ms 18 Jan 2023 428th lynn 859 96 39ms 6 Aug 2023 430th sean-niemann 🇺🇸 857 58 106ms 27 Apr 2024 431st Irratix 🇳🇱 857 62 2ms 20 Dec 2021 431st ovs-code 🇩🇪 857 62 2ms 8 May 2023 431st sean-niemann 🇺🇸 857 62 2ms 18 Dec 2023 434th inventshah 857 83 58ms 17 Nov 2022 434th ovs-code 🇩🇪 857 83 55ms 3 Jun 2024 434th DialFrost 🇸🇬 857 83 56ms 7 Nov 2025 437th Lydxn 🇨🇦 857 100 25ms 13 Oct 2023 438th primo-ppcg 🇹🇭 857 195 11ms 2 Aug 2023 439th MeWhenI 🇻🇦 856 78 473ms 7 Nov 2025 440th Lydxn 🇨🇦 854 63 2ms 15 Jan 2024 440th JayXon 🇺🇸 854 63 4ms 29 Jan 2024 440th rucin93 🇵🇱 854 63 2ms 19 Nov 2025 443rd primo-ppcg 🇹🇭 854 78 122ms 27 Mar 2021 443rd Shanethegamer 🇺🇸 854 78 125ms 18 Mar 2023 443rd Ripick 854 78 172ms 2 Jun 2025 446th sean-niemann 🇺🇸 854 80 95ms 21 Sep 2023 446th Yewzir 🇧🇪 854 80 76ms 16 Nov 2023 448th snoozingnewt 🇨🇦 854 101 117ms 5 Dec 2025 449th Yewzir 🇧🇪 854 130 1,746ms 27 Apr 2024 450th Steffan153 🇫🇮 852 77 4ms 1 Nov 2023 451st MeWhenI 🇻🇦 852 84 40ms 29 Apr 2025 452nd Shanethegamer 🇺🇸 851 67 2,205ms 27 Oct 2024 452nd pardouin 🇫🇷 851 67 2,194ms 23 Dec 2024 454th MeWhenI 🇻🇦 851 70 425ms 21 Nov 2021 455th kg583 🇺🇸 851 86 9ms 1 Sep 2025 456th ovs-code 🇩🇪 851 138 1,409ms 17 Feb 2025 457th Espiobest 850 58 11ms 13 Mar 2021 457th fgrosshans 🇫🇷 850 58 11ms 18 Jul 2022 457th MaxElf999 850 58 11ms 3 Oct 2022 457th Alex-x90 🇺🇸 850 58 30ms 23 Mar 2023 457th Natanaelel 🇸🇪 850 58 13ms 11 Apr 2023 457th InigoK 🇺🇸 850 58 28ms 28 May 2023 457th Kacarott 🇦🇺 850 58 28ms 13 Oct 2023 457th m42km 850 58 28ms 25 Nov 2023 457th StefanHabel 🇨🇦 850 58 13ms 20 Apr 2024 457th NickTheEASDude 🇺🇸 850 58 27ms 1 Jul 2024 457th namelessiw 850 58 30ms 27 Jul 2024 457th edsrzf 🇳🇿 850 58 20ms 22 Nov 2024 457th croc54 850 58 30ms 9 Jan 2025 457th andrewjc2000 850 58 29ms 11 Mar 2025 457th wuduculfre 850 58 30ms 22 Jul 2025 457th robin-scragg 850 58 13ms 21 Oct 2025 473rd albanian-laundromat 850 77 9ms 22 Oct 2025 474th MeWhenI 🇻🇦 849 65 7ms 24 Dec 2024 475th ovs-code 🇩🇪 849 73 67ms 17 Sep 2023 476th sisyphus-ppcg 🇦🇺 848 89 117ms 25 Jan 2021 476th Bubbler-4 848 89 124ms 1 Jul 2021 478th snoozingnewt 🇨🇦 847 44 102ms 38 hours ago 479th jared-hughes 847 55 10ms 31 Jul 2022 479th emgordon154 847 55 9ms 4 Mar 2025 First Prev 401–480 of 1,899 Next Last