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 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 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 Multitap Input 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 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 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 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 Multitap Input 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 639th dokutan 791 91 55ms 18 Jul 2025 642nd Salutations45 790 59 10ms 9 Jan 2025 643rd Shanethegamer 🇺🇸 790 89 457ms 26 Jul 2023 644th ashtraypettingzoo 🇺🇸 789 19 2ms 3 Apr 2023 644th AlephSquirrel 789 19 2ms 8 Nov 2025 646th MeWhenI 🇻🇦 789 63 114ms 16 Nov 2022 647th MeWhenI 🇻🇦 789 83 3ms 10 Sep 2022 648th kkoenig 789 111 250ms 5 Jan 2024 649th prplz 🇦🇺 786 46 248ms 24 Jan 2021 649th TimCurwick 🇺🇸 786 46 238ms 26 Jan 2021 649th SirBogman 🇺🇸 786 46 254ms 2 Feb 2024 652nd SirBogman 🇺🇸 786 91 38ms 3 Jun 2025 653rd RDShah 785 64 10ms 17 Jan 2021 653rd andre-lameirinhas 🇵🇹 785 64 10ms 22 Feb 2021 653rd stertooy 🇧🇪 785 64 10ms 10 Jun 2024 653rd Terobero 785 64 20ms 6 Sep 2024 653rd moustave 785 64 11ms 5 May 2025 653rd Code-Coder-coder 785 64 11ms 25 Nov 2025 653rd Lv0Sys 🇵🇱 785 64 10ms 4 Dec 2025 660th Yewzir 🇧🇪 784 82 105ms 28 Mar 2024 661st Shanethegamer 🇺🇸 782 63 352ms 2 Jul 2021 662nd Waffle3z 781 54 37ms 19 Jan 2021 662nd KatieLG 🇬🇧 781 54 37ms 9 Jan 2023 662nd Andriamanitra 🇫🇮 781 54 38ms 20 Jul 2023 665th DialFrost 🇸🇬 780 142 1,630ms 13 Sep 2025 666th Shanethegamer 🇺🇸 778 106 33ms 20 Jan 2025 667th rak1507 🇬🇧 777 60 10ms 20 Jan 2021 667th Shanethegamer 🇺🇸 777 60 9ms 26 Sep 2021 667th duckyluuk 🇳🇱 777 60 10ms 4 Oct 2024 670th anter69 🇭🇺 776 59 1,243ms 24 Feb 2023 670th SirBogman 🇺🇸 776 59 1,298ms 10 Jun 2024 672nd NewDefectus 🇮🇱 774 25 4ms 25 Oct 2021 673rd scpchicken 🇵🇼 774 48 3ms 15 Dec 2022 674th commandblockguy 🇺🇸 774 62 450ms 15 Jan 2024 675th Shanethegamer 🇺🇸 774 93 57ms 12 Jan 2022 676th ovs-code 🇩🇪 774 142 12ms 31 Mar 2023 677th TobyBoyne 🇬🇧 773 65 10ms 21 Jan 2021 677th 77Tigers 773 65 30ms 1 Mar 2021 677th knutae 🇳🇴 773 65 10ms 29 Jun 2021 677th ehulinsky 🇺🇸 773 65 13ms 10 Nov 2021 677th guilhem-roy 🇫🇷 773 65 10ms 28 Feb 2022 677th martinnorling 🇸🇪 773 65 10ms 8 Mar 2022 677th fgrosshans 🇫🇷 773 65 11ms 12 Jul 2022 677th IshanPanpaliya 773 65 10ms 3 May 2023 677th nooberitess 773 65 11ms 8 Apr 2025 677th robin-scragg 773 65 10ms 21 Oct 2025 687th MeWhenI 🇻🇦 772 59 701ms 15 Sep 2025 688th c0d3-4-F00d 🇩🇪 772 70 2ms 18 Mar 2022 688th Alex-x90 🇺🇸 772 70 2ms 6 Mar 2023 688th dokutan 772 70 5ms 18 Jul 2025 691st mousetail 🇳🇱 771 98 116ms 3 Oct 2024 692nd MeWhenI 🇻🇦 770 47 262ms 28 Jan 2023 693rd LostSyntax21 🇬🇧 767 55 51ms 2 Oct 2024 694th MeWhenI 🇻🇦 767 89 103ms 25 Dec 2022 695th emgordon154 766 32 43ms 19 Oct 2025 696th retrohun 765 63 102ms 23 Jan 2023 697th Shanethegamer 🇺🇸 765 65 105ms 22 May 2021 698th lynn 765 78 150ms 16 Nov 2021 699th rucin93 🇵🇱 764 60 127ms 9 Aug 2024 700th Waffle3z 764 61 9ms 20 Jan 2021 700th didion0 🇺🇸 764 61 10ms 9 Feb 2021 700th KrausRaus 🇺🇸 764 61 11ms 19 Feb 2021 700th tayloia 🇬🇧 764 61 10ms 29 May 2022 704th MeWhenI 🇻🇦 764 108 27ms 7 Jun 2023 705th ScottHamper 762 90 446ms 30 Nov 2025 706th ArmaanAS 761 66 11ms 4 Apr 2021 706th quimey 761 66 11ms 23 Jun 2023 708th albanian-laundromat 759 60 718ms 1 Oct 2025 709th SirBogman 🇺🇸 759 86 115ms 24 Jan 2021 709th strout 759 86 124ms 15 Dec 2023 711th antimon2 🇯🇵 758 65 470ms 19 Jan 2021 712th GolfingSuccess 🇬🇷 758 71 6ms 16 Oct 2023 712th Yewzir 🇧🇪 758 71 3ms 19 Nov 2025 714th kcinnu 🇱🇹 758 146 1,731ms 17 May 2024 715th duckyluuk 🇳🇱 756 73 8ms 16 Dec 2024 716th janbehrens 🇩🇪 756 93 464ms 24 Mar 2022 717th Shanethegamer 🇺🇸 754 63 4ms 13 Aug 2024 717th emgordon154 754 63 4ms 25 Aug 2024 719th olivermrose 🇺🇸 753 56 41ms 21 Sep 2021 720th lynn 753 85 1,383ms 12 Sep 2021 First Prev 641–720 of 1,902 Next Last