Kolakoski Sequence in all languages in bytes. 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 Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator 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 Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator 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 Bytes Time Submitted 640th neihousaigaai 798 63 11ms 10 Apr 2021 640th lechevalier 798 63 12ms 9 Aug 2021 640th yzhs 🇩🇪 798 63 10ms 7 Jun 2022 640th commandz0 🇺🇸 798 63 14ms 19 Sep 2022 640th fourth-bit 798 63 12ms 21 Nov 2022 640th FortuiteMan 🇫🇷 798 63 27ms 8 Sep 2023 640th ssbhatt4321 798 63 27ms 14 Oct 2023 640th JOrE20 798 63 13ms 25 Feb 2026 649th Yax42 🇫🇷 798 77 424ms 5 May 2025 650th TrueBoxGuy 798 95 113ms 24 Sep 2025 651st DialFrost 🇸🇬 797 53 38ms 2 Feb 2023 651st SirBogman 🇺🇸 797 53 38ms 10 Jun 2024 653rd primo-ppcg 🇹🇭 797 78 69ms 13 Oct 2023 654th tobeannouncd 797 82 124ms 8 Jan 2024 655th GrayJoKing 🇦🇺 796 86 10ms 15 Aug 2023 655th Shanethegamer 🇺🇸 796 86 11ms 11 Jan 2024 657th m-ender 🇩🇪 796 91 161ms 23 Apr 2021 658th GrayJoKing 🇦🇺 795 68 2ms 21 Jan 2021 658th m-tkach 🇺🇦 795 68 2ms 25 Apr 2022 658th MeWhenI 🇻🇦 795 68 2ms 11 Nov 2022 661st MichalMarsalek 🇨🇿 794 84 117ms 6 Jan 2023 662nd SirBogman 🇺🇸 793 31 45ms 7 Oct 2022 663rd janbehrens 🇩🇪 792 91 59ms 20 Nov 2022 663rd snyderek 🇺🇸 792 91 56ms 21 Nov 2024 663rd dokutan 792 91 58ms 18 Jul 2025 666th MeWhenI 🇻🇦 791 83 3ms 10 Sep 2022 667th Shanethegamer 🇺🇸 791 89 468ms 26 Jul 2023 668th Salutations45 790 59 11ms 9 Jan 2025 669th MeWhenI 🇻🇦 790 63 154ms 16 Nov 2022 670th kkoenig 790 111 342ms 5 Jan 2024 671st ashtraypettingzoo 🇺🇸 789 19 2ms 3 Apr 2023 671st AlephSquirrel 789 19 2ms 8 Nov 2025 673rd SirBogman 🇺🇸 788 91 38ms 3 Jun 2025 674th prplz 🇦🇺 787 46 237ms 24 Jan 2021 674th TimCurwick 🇺🇸 787 46 217ms 26 Jan 2021 674th SirBogman 🇺🇸 787 46 219ms 2 Feb 2024 677th RDShah 785 64 12ms 17 Jan 2021 677th andre-lameirinhas 🇵🇹 785 64 11ms 22 Feb 2021 677th stertooy 🇧🇪 785 64 12ms 10 Jun 2024 677th Terobero 785 64 21ms 6 Sep 2024 677th moustave 785 64 12ms 5 May 2025 677th Code-Coder-coder 785 64 13ms 25 Nov 2025 677th Lv0Sys 🇵🇱 785 64 13ms 4 Dec 2025 684th Yewzir 🇧🇪 785 82 119ms 28 Mar 2024 685th Shanethegamer 🇺🇸 783 63 346ms 2 Jul 2021 686th Waffle3z 782 54 38ms 19 Jan 2021 686th KatieLG 🇬🇧 782 54 37ms 9 Jan 2023 686th Andriamanitra 🇫🇮 782 54 37ms 20 Jul 2023 689th Shanethegamer 🇺🇸 780 106 33ms 20 Jan 2025 690th SirBogman 🇺🇸 779 46 232ms 22 Oct 2021 691st anter69 🇭🇺 777 59 1,306ms 24 Feb 2023 691st SirBogman 🇺🇸 777 59 1,208ms 10 Jun 2024 693rd rak1507 🇬🇧 777 60 11ms 20 Jan 2021 693rd Shanethegamer 🇺🇸 777 60 10ms 26 Sep 2021 693rd duckyluuk 🇳🇱 777 60 10ms 4 Oct 2024 696th MeWhenI 🇻🇦 776 59 1,074ms 15 Sep 2025 697th ovs-code 🇩🇪 776 142 11ms 31 Mar 2023 698th commandz0 🇺🇸 775 62 523ms 15 Jan 2024 699th Shanethegamer 🇺🇸 775 93 57ms 12 Jan 2022 700th NewDefectus 🇮🇱 774 25 4ms 25 Oct 2021 701st scpchicken 🇵🇼 774 48 3ms 15 Dec 2022 702nd TobyBoyne 🇬🇧 773 65 11ms 21 Jan 2021 702nd 77Tigers 773 65 33ms 1 Mar 2021 702nd knutae 🇳🇴 773 65 12ms 29 Jun 2021 702nd ehulinsky 🇺🇸 773 65 13ms 10 Nov 2021 702nd guilhem-roy 🇫🇷 773 65 12ms 28 Feb 2022 702nd martinnorling 🇸🇪 773 65 11ms 8 Mar 2022 702nd fgrosshans 🇫🇷 773 65 11ms 12 Jul 2022 702nd IshanPanpaliya 773 65 11ms 3 May 2023 702nd nooberitess 773 65 12ms 8 Apr 2025 702nd robin-scragg 773 65 16ms 21 Oct 2025 712th mousetail 🇳🇱 773 98 123ms 3 Oct 2024 713th c0d3-4-F00d 🇩🇪 772 70 2ms 18 Mar 2022 713th Alex-x90 🇺🇸 772 70 2ms 6 Mar 2023 713th dokutan 772 70 2ms 18 Jul 2025 716th MeWhenI 🇻🇦 771 89 95ms 25 Dec 2022 717th MeWhenI 🇻🇦 770 47 247ms 28 Jan 2023 718th emgordon154 768 32 43ms 19 Oct 2025 719th LostSyntax21 🇬🇧 768 55 36ms 2 Oct 2024 720th lynn 767 78 152ms 16 Nov 2021 First Prev 641–720 of 2,019 Next Last