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 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 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 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 Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 635th FortuiteMan 🇫🇷 797 63 31ms 8 Sep 2023 635th ssbhatt4321 797 63 27ms 14 Oct 2023 635th JOrE20 797 63 11ms 23 days ago 644th Yax42 🇫🇷 797 77 448ms 5 May 2025 645th DialFrost 🇸🇬 796 53 38ms 2 Feb 2023 645th SirBogman 🇺🇸 796 53 38ms 10 Jun 2024 647th tobeannouncd 796 82 124ms 8 Jan 2024 648th GrayJoKing 🇦🇺 795 68 2ms 21 Jan 2021 648th m-tkach 🇺🇦 795 68 2ms 25 Apr 2022 648th MeWhenI 🇻🇦 795 68 2ms 11 Nov 2022 651st primo-ppcg 🇹🇭 795 78 71ms 13 Oct 2023 652nd TrueBoxGuy 795 95 121ms 24 Sep 2025 653rd GrayJoKing 🇦🇺 794 86 10ms 15 Aug 2023 653rd Shanethegamer 🇺🇸 794 86 11ms 11 Jan 2024 655th m-ender 🇩🇪 794 91 162ms 23 Apr 2021 656th MichalMarsalek 🇨🇿 793 84 117ms 6 Jan 2023 657th SirBogman 🇺🇸 792 31 45ms 7 Oct 2022 658th janbehrens 🇩🇪 791 91 57ms 20 Nov 2022 658th snyderek 🇺🇸 791 91 61ms 21 Nov 2024 658th dokutan 791 91 60ms 18 Jul 2025 661st Salutations45 790 59 12ms 9 Jan 2025 662nd Shanethegamer 🇺🇸 790 89 468ms 26 Jul 2023 663rd ashtraypettingzoo 🇺🇸 789 19 2ms 3 Apr 2023 663rd AlephSquirrel 789 19 2ms 8 Nov 2025 665th MeWhenI 🇻🇦 789 63 154ms 16 Nov 2022 666th MeWhenI 🇻🇦 789 83 3ms 10 Sep 2022 667th kkoenig 789 111 311ms 5 Jan 2024 668th prplz 🇦🇺 786 46 271ms 24 Jan 2021 668th TimCurwick 🇺🇸 786 46 235ms 26 Jan 2021 668th SirBogman 🇺🇸 786 46 265ms 2 Feb 2024 671st SirBogman 🇺🇸 786 91 38ms 3 Jun 2025 672nd RDShah 785 64 11ms 17 Jan 2021 672nd andre-lameirinhas 🇵🇹 785 64 11ms 22 Feb 2021 672nd stertooy 🇧🇪 785 64 11ms 10 Jun 2024 672nd Terobero 785 64 20ms 6 Sep 2024 672nd moustave 785 64 12ms 5 May 2025 672nd Code-Coder-coder 785 64 11ms 25 Nov 2025 672nd Lv0Sys 🇵🇱 785 64 11ms 4 Dec 2025 679th Yewzir 🇧🇪 784 82 114ms 28 Mar 2024 680th Shanethegamer 🇺🇸 782 63 346ms 2 Jul 2021 681st Waffle3z 781 54 38ms 19 Jan 2021 681st KatieLG 🇬🇧 781 54 37ms 9 Jan 2023 681st Andriamanitra 🇫🇮 781 54 37ms 20 Jul 2023 684th Shanethegamer 🇺🇸 778 106 33ms 20 Jan 2025 685th rak1507 🇬🇧 777 60 10ms 20 Jan 2021 685th Shanethegamer 🇺🇸 777 60 9ms 26 Sep 2021 685th duckyluuk 🇳🇱 777 60 9ms 4 Oct 2024 688th anter69 🇭🇺 776 59 1,306ms 24 Feb 2023 688th SirBogman 🇺🇸 776 59 1,208ms 10 Jun 2024 690th commandz0 🇺🇸 775 62 417ms 15 Jan 2024 691st NewDefectus 🇮🇱 774 25 4ms 25 Oct 2021 692nd scpchicken 🇵🇼 774 48 3ms 15 Dec 2022 693rd MeWhenI 🇻🇦 774 59 1,030ms 15 Sep 2025 694th Shanethegamer 🇺🇸 774 93 54ms 12 Jan 2022 695th ovs-code 🇩🇪 774 142 11ms 31 Mar 2023 696th TobyBoyne 🇬🇧 773 65 11ms 21 Jan 2021 696th 77Tigers 773 65 32ms 1 Mar 2021 696th knutae 🇳🇴 773 65 10ms 29 Jun 2021 696th ehulinsky 🇺🇸 773 65 13ms 10 Nov 2021 696th guilhem-roy 🇫🇷 773 65 12ms 28 Feb 2022 696th martinnorling 🇸🇪 773 65 10ms 8 Mar 2022 696th fgrosshans 🇫🇷 773 65 11ms 12 Jul 2022 696th IshanPanpaliya 773 65 11ms 3 May 2023 696th nooberitess 773 65 12ms 8 Apr 2025 696th robin-scragg 773 65 12ms 21 Oct 2025 696th Flekay 🇩🇪 773 65 14ms 13 Feb 2026 707th c0d3-4-F00d 🇩🇪 772 70 2ms 18 Mar 2022 707th Alex-x90 🇺🇸 772 70 2ms 6 Mar 2023 707th dokutan 772 70 2ms 18 Jul 2025 710th mousetail 🇳🇱 771 98 126ms 3 Oct 2024 711th MeWhenI 🇻🇦 770 47 268ms 28 Jan 2023 712th emgordon154 767 32 43ms 19 Oct 2025 713th LostSyntax21 🇬🇧 767 55 36ms 2 Oct 2024 714th MeWhenI 🇻🇦 767 89 103ms 25 Dec 2022 715th retrohun 765 63 102ms 23 Jan 2023 716th Shanethegamer 🇺🇸 765 65 147ms 22 May 2021 717th lynn 765 78 152ms 16 Nov 2021 718th rucin93 🇵🇱 764 60 136ms 9 Aug 2024 719th Waffle3z 764 61 9ms 20 Jan 2021 719th didion0 🇺🇸 764 61 10ms 9 Feb 2021 First Prev 641–720 of 1,935 Next Last