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 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 Bytes Time Submitted 641st DialFrost 🇸🇬 796 53 38ms 2 Feb 2023 641st SirBogman 🇺🇸 796 53 37ms 10 Jun 2024 643rd tobeannouncd 796 82 124ms 8 Jan 2024 644th GrayJoKing 🇦🇺 795 68 2ms 21 Jan 2021 644th m-tkach 🇺🇦 795 68 2ms 25 Apr 2022 644th MeWhenI 🇻🇦 795 68 2ms 11 Nov 2022 647th primo-ppcg 🇹🇭 795 78 71ms 13 Oct 2023 648th TrueBoxGuy 795 95 121ms 24 Sep 2025 649th GrayJoKing 🇦🇺 794 86 10ms 15 Aug 2023 649th Shanethegamer 🇺🇸 794 86 11ms 11 Jan 2024 651st m-ender 🇩🇪 794 91 153ms 23 Apr 2021 652nd MichalMarsalek 🇨🇿 793 84 117ms 6 Jan 2023 653rd SirBogman 🇺🇸 791 31 51ms 7 Oct 2022 654th janbehrens 🇩🇪 791 91 61ms 20 Nov 2022 654th snyderek 🇺🇸 791 91 61ms 21 Nov 2024 654th dokutan 791 91 68ms 18 Jul 2025 657th Salutations45 790 59 11ms 9 Jan 2025 658th Shanethegamer 🇺🇸 790 89 468ms 26 Jul 2023 659th ashtraypettingzoo 🇺🇸 789 19 2ms 3 Apr 2023 659th AlephSquirrel 789 19 2ms 8 Nov 2025 661st MeWhenI 🇻🇦 789 63 154ms 16 Nov 2022 662nd MeWhenI 🇻🇦 789 83 3ms 10 Sep 2022 663rd kkoenig 789 111 311ms 5 Jan 2024 664th prplz 🇦🇺 786 46 248ms 24 Jan 2021 664th TimCurwick 🇺🇸 786 46 238ms 26 Jan 2021 664th SirBogman 🇺🇸 786 46 254ms 2 Feb 2024 667th SirBogman 🇺🇸 786 91 38ms 3 Jun 2025 668th RDShah 785 64 11ms 17 Jan 2021 668th andre-lameirinhas 🇵🇹 785 64 11ms 22 Feb 2021 668th stertooy 🇧🇪 785 64 11ms 10 Jun 2024 668th Terobero 785 64 20ms 6 Sep 2024 668th moustave 785 64 12ms 5 May 2025 668th Code-Coder-coder 785 64 11ms 25 Nov 2025 668th Lv0Sys 🇵🇱 785 64 11ms 4 Dec 2025 675th Yewzir 🇧🇪 784 82 114ms 28 Mar 2024 676th Shanethegamer 🇺🇸 782 63 346ms 2 Jul 2021 677th Waffle3z 781 54 37ms 19 Jan 2021 677th KatieLG 🇬🇧 781 54 37ms 9 Jan 2023 677th Andriamanitra 🇫🇮 781 54 38ms 20 Jul 2023 680th Shanethegamer 🇺🇸 778 106 33ms 20 Jan 2025 681st rak1507 🇬🇧 777 60 10ms 20 Jan 2021 681st Shanethegamer 🇺🇸 777 60 9ms 26 Sep 2021 681st duckyluuk 🇳🇱 777 60 9ms 4 Oct 2024 684th anter69 🇭🇺 776 59 1,306ms 24 Feb 2023 684th SirBogman 🇺🇸 776 59 1,208ms 10 Jun 2024 686th commandz0 🇺🇸 775 62 417ms 15 Jan 2024 687th NewDefectus 🇮🇱 774 25 4ms 25 Oct 2021 688th scpchicken 🇵🇼 774 48 4ms 15 Dec 2022 689th MeWhenI 🇻🇦 774 59 1,030ms 15 Sep 2025 690th Shanethegamer 🇺🇸 774 93 55ms 12 Jan 2022 691st ovs-code 🇩🇪 774 142 11ms 31 Mar 2023 692nd TobyBoyne 🇬🇧 773 65 11ms 21 Jan 2021 692nd 77Tigers 773 65 32ms 1 Mar 2021 692nd knutae 🇳🇴 773 65 10ms 29 Jun 2021 692nd ehulinsky 🇺🇸 773 65 13ms 10 Nov 2021 692nd guilhem-roy 🇫🇷 773 65 12ms 28 Feb 2022 692nd martinnorling 🇸🇪 773 65 10ms 8 Mar 2022 692nd fgrosshans 🇫🇷 773 65 11ms 12 Jul 2022 692nd IshanPanpaliya 773 65 11ms 3 May 2023 692nd nooberitess 773 65 12ms 8 Apr 2025 692nd robin-scragg 773 65 12ms 21 Oct 2025 692nd Flekay 🇩🇪 773 65 14ms 25 days ago 703rd c0d3-4-F00d 🇩🇪 772 70 2ms 18 Mar 2022 703rd Alex-x90 🇺🇸 772 70 2ms 6 Mar 2023 703rd dokutan 772 70 2ms 18 Jul 2025 706th mousetail 🇳🇱 771 98 126ms 3 Oct 2024 707th MeWhenI 🇻🇦 770 47 231ms 28 Jan 2023 708th LostSyntax21 🇬🇧 767 55 40ms 2 Oct 2024 709th MeWhenI 🇻🇦 767 89 103ms 25 Dec 2022 710th emgordon154 766 32 43ms 19 Oct 2025 711th retrohun 765 63 102ms 23 Jan 2023 712th Shanethegamer 🇺🇸 765 65 147ms 22 May 2021 713th lynn 765 78 151ms 16 Nov 2021 714th rucin93 🇵🇱 764 60 136ms 9 Aug 2024 715th Waffle3z 764 61 12ms 20 Jan 2021 715th didion0 🇺🇸 764 61 11ms 9 Feb 2021 715th KrausRaus 🇺🇸 764 61 11ms 19 Feb 2021 715th tayloia 🇬🇧 764 61 9ms 29 May 2022 719th MeWhenI 🇻🇦 764 108 27ms 7 Jun 2023 720th ScottHamper 762 90 502ms 30 Nov 2025 First Prev 641–720 of 1,930 Next Last