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 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 Chars Time Submitted 638th commandblockguy 🇺🇸 782 63 12ms 19 Sep 2022 638th fourth-bit 782 63 10ms 21 Nov 2022 638th FortuiteMan 🇫🇷 782 63 24ms 8 Sep 2023 638th ssbhatt4321 782 63 26ms 14 Oct 2023 638th dokutan 782 63 17ms 1 Apr 2025 646th Waffle3z 781 54 37ms 19 Jan 2021 646th olivermrose 🇺🇸 781 54 37ms 28 Sep 2021 646th KatieLG 🇬🇧 781 54 37ms 9 Jan 2023 646th Andriamanitra 🇫🇮 781 54 38ms 20 Jul 2023 650th GrayJoKing 🇦🇺 781 68 2ms 21 Jan 2021 650th m-tkach 🇺🇦 781 68 5ms 25 Apr 2022 650th MeWhenI 🇻🇦 781 68 2ms 11 Nov 2022 653rd janbehrens 🇩🇪 781 91 57ms 20 Nov 2022 653rd snyderek 🇺🇸 781 91 53ms 21 Nov 2024 653rd dokutan 781 91 55ms 18 Jul 2025 656th MeWhenI 🇻🇦 779 88 416ms 28 Feb 2022 657th Shanethegamer 🇺🇸 778 106 33ms 20 Jan 2025 658th rak1507 🇬🇧 777 60 10ms 20 Jan 2021 658th Shanethegamer 🇺🇸 777 60 9ms 26 Sep 2021 658th duckyluuk 🇳🇱 777 60 10ms 4 Oct 2024 661st anter69 🇭🇺 776 59 1,243ms 24 Feb 2023 661st SirBogman 🇺🇸 776 59 1,298ms 10 Jun 2024 663rd scpchicken 🇵🇼 774 48 3ms 15 Dec 2022 664th commandblockguy 🇺🇸 774 62 450ms 15 Jan 2024 664th HumanoidCPU 774 62 401ms 3 Jun 2024 666th ovs-code 🇩🇪 774 142 12ms 31 Mar 2023 667th GrayJoKing 🇦🇺 771 55 135ms 6 Aug 2024 668th Shanethegamer 🇺🇸 771 89 457ms 26 Jul 2023 669th mousetail 🇳🇱 771 98 116ms 3 Oct 2024 670th NewDefectus 🇮🇱 770 24 4ms 25 Oct 2021 671st MeWhenI 🇻🇦 770 47 262ms 28 Jan 2023 672nd RDShah 770 64 10ms 17 Jan 2021 672nd andre-lameirinhas 🇵🇹 770 64 10ms 22 Feb 2021 672nd stertooy 🇧🇪 770 64 10ms 10 Jun 2024 672nd Terobero 770 64 20ms 6 Sep 2024 672nd moustave 770 64 11ms 5 May 2025 672nd Code-Coder-coder 770 64 11ms 25 Nov 2025 672nd Lv0Sys 🇵🇱 770 64 10ms 4 Dec 2025 679th LostSyntax21 🇬🇧 767 55 51ms 2 Oct 2024 680th MeWhenI 🇻🇦 767 89 103ms 25 Dec 2022 681st retrohun 765 63 102ms 23 Jan 2023 682nd Shanethegamer 🇺🇸 765 65 105ms 22 May 2021 683rd lynn 765 78 150ms 16 Nov 2021 684th Waffle3z 764 61 9ms 20 Jan 2021 684th didion0 🇺🇸 764 61 10ms 9 Feb 2021 684th KrausRaus 🇺🇸 764 61 11ms 19 Feb 2021 684th tayloia 🇬🇧 764 61 10ms 29 May 2022 688th Shanethegamer 🇺🇸 764 93 57ms 12 Jan 2022 689th MeWhenI 🇻🇦 764 108 27ms 7 Jun 2023 690th SirBogman 🇺🇸 763 31 51ms 7 Oct 2022 691st Shanethegamer 🇺🇸 763 60 352ms 2 Jul 2021 691st alemelis 763 60 1,936ms 14 Aug 2024 693rd dokutan 762 63 430ms 1 Apr 2025 694th DialFrost 🇸🇬 762 86 5ms 10 Oct 2023 695th albanian-laundromat 759 60 718ms 1 Oct 2025 696th c0d3-4-F00d 🇩🇪 759 70 2ms 18 Mar 2022 696th Alex-x90 🇺🇸 759 70 2ms 6 Mar 2023 696th dokutan 759 70 5ms 18 Jul 2025 699th SirBogman 🇺🇸 759 86 115ms 24 Jan 2021 699th strout 759 86 124ms 15 Dec 2023 701st TobyBoyne 🇬🇧 758 65 10ms 21 Jan 2021 701st 77Tigers 758 65 30ms 1 Mar 2021 701st knutae 🇳🇴 758 65 10ms 29 Jun 2021 701st ehulinsky 🇺🇸 758 65 13ms 10 Nov 2021 701st guilhem-roy 🇫🇷 758 65 10ms 28 Feb 2022 701st martinnorling 🇸🇪 758 65 10ms 8 Mar 2022 701st IshanPanpaliya 758 65 10ms 3 May 2023 701st nooberitess 758 65 11ms 8 Apr 2025 709th GolfingSuccess 🇬🇷 758 71 6ms 16 Oct 2023 709th Yewzir 🇧🇪 758 71 3ms 19 Nov 2025 711th kcinnu 🇱🇹 758 146 1,731ms 17 May 2024 712th duckyluuk 🇳🇱 756 73 8ms 16 Dec 2024 713th Shanethegamer 🇺🇸 754 63 4ms 13 Aug 2024 713th emgordon154 754 63 4ms 25 Aug 2024 715th ovs-code 🇩🇪 754 87 106ms 8 Mar 2024 716th lynn 753 85 1,383ms 12 Sep 2021 717th ScottHamper 752 62 10ms 1 Jun 2021 717th helbling 🇨🇭 752 62 10ms 2 Oct 2024 719th RockOfStone 752 81 3ms 4 Nov 2021 719th dokutan 752 81 2ms 18 Jul 2025 First Prev 641–720 of 1,884 Next Last