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 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 Chars Time Submitted 641st kkoenig 788 109 311ms 5 Jan 2024 642nd prplz 🇦🇺 786 46 248ms 24 Jan 2021 642nd TimCurwick 🇺🇸 786 46 238ms 26 Jan 2021 642nd SirBogman 🇺🇸 786 46 254ms 2 Feb 2024 645th SirBogman 🇺🇸 786 91 38ms 3 Jun 2025 646th Shanethegamer 🇺🇸 784 76 408ms 13 Dec 2021 646th Yax42 🇫🇷 784 76 409ms 5 May 2025 648th Yewzir 🇧🇪 784 82 114ms 28 Mar 2024 649th nwellnhof 🇩🇪 782 38 162ms 21 Oct 2021 650th apourchot 782 63 18ms 13 Feb 2021 650th neihousaigaai 782 63 10ms 10 Apr 2021 650th lechevalier 782 63 10ms 9 Aug 2021 650th commandz0 🇺🇸 782 63 13ms 19 Sep 2022 650th fourth-bit 782 63 11ms 21 Nov 2022 650th FortuiteMan 🇫🇷 782 63 31ms 8 Sep 2023 650th ssbhatt4321 782 63 27ms 14 Oct 2023 650th dokutan 782 63 18ms 1 Apr 2025 658th janbehrens 🇩🇪 782 91 61ms 20 Nov 2022 658th snyderek 🇺🇸 782 91 61ms 21 Nov 2024 658th dokutan 782 91 68ms 18 Jul 2025 661st Waffle3z 781 54 37ms 19 Jan 2021 661st olivermrose 🇺🇸 781 54 37ms 28 Sep 2021 661st KatieLG 🇬🇧 781 54 37ms 9 Jan 2023 661st Andriamanitra 🇫🇮 781 54 38ms 20 Jul 2023 665th GrayJoKing 🇦🇺 781 68 2ms 21 Jan 2021 665th m-tkach 🇺🇦 781 68 2ms 25 Apr 2022 665th MeWhenI 🇻🇦 781 68 2ms 11 Nov 2022 668th MeWhenI 🇻🇦 779 88 457ms 28 Feb 2022 669th Shanethegamer 🇺🇸 778 106 33ms 20 Jan 2025 670th rak1507 🇬🇧 777 60 10ms 20 Jan 2021 670th Shanethegamer 🇺🇸 777 60 9ms 26 Sep 2021 670th duckyluuk 🇳🇱 777 60 9ms 4 Oct 2024 673rd anter69 🇭🇺 776 59 1,306ms 24 Feb 2023 673rd SirBogman 🇺🇸 776 59 1,208ms 10 Jun 2024 675th commandz0 🇺🇸 775 62 417ms 15 Jan 2024 675th HumanoidCPU 775 62 409ms 3 Jun 2024 675th dokutan 775 62 379ms 24 days ago 678th scpchicken 🇵🇼 774 48 4ms 15 Dec 2022 679th ovs-code 🇩🇪 774 142 11ms 31 Mar 2023 680th GrayJoKing 🇦🇺 771 55 141ms 6 Aug 2024 681st Shanethegamer 🇺🇸 771 89 468ms 26 Jul 2023 682nd mousetail 🇳🇱 771 98 126ms 3 Oct 2024 683rd NewDefectus 🇮🇱 770 24 4ms 25 Oct 2021 684th MeWhenI 🇻🇦 770 47 231ms 28 Jan 2023 685th RDShah 770 64 11ms 17 Jan 2021 685th andre-lameirinhas 🇵🇹 770 64 11ms 22 Feb 2021 685th stertooy 🇧🇪 770 64 11ms 10 Jun 2024 685th Terobero 770 64 20ms 6 Sep 2024 685th moustave 770 64 12ms 5 May 2025 685th Code-Coder-coder 770 64 11ms 25 Nov 2025 685th Lv0Sys 🇵🇱 770 64 11ms 4 Dec 2025 692nd LostSyntax21 🇬🇧 767 55 40ms 2 Oct 2024 693rd MeWhenI 🇻🇦 767 89 103ms 25 Dec 2022 694th retrohun 765 63 102ms 23 Jan 2023 695th Shanethegamer 🇺🇸 765 65 147ms 22 May 2021 696th lynn 765 78 151ms 16 Nov 2021 697th Shanethegamer 🇺🇸 765 93 55ms 12 Jan 2022 698th Waffle3z 764 61 12ms 20 Jan 2021 698th didion0 🇺🇸 764 61 11ms 9 Feb 2021 698th KrausRaus 🇺🇸 764 61 11ms 19 Feb 2021 698th tayloia 🇬🇧 764 61 9ms 29 May 2022 702nd MeWhenI 🇻🇦 764 108 27ms 7 Jun 2023 703rd SirBogman 🇺🇸 763 31 51ms 7 Oct 2022 704th Shanethegamer 🇺🇸 763 60 346ms 2 Jul 2021 704th alemelis 763 60 2,055ms 14 Aug 2024 706th DialFrost 🇸🇬 762 86 5ms 10 Oct 2023 707th albanian-laundromat 761 60 1,139ms 1 Oct 2025 708th kcinnu 🇱🇹 760 146 1,731ms 17 May 2024 709th c0d3-4-F00d 🇩🇪 759 70 2ms 18 Mar 2022 709th Alex-x90 🇺🇸 759 70 2ms 6 Mar 2023 709th dokutan 759 70 2ms 18 Jul 2025 712th SirBogman 🇺🇸 759 86 115ms 24 Jan 2021 712th strout 759 86 124ms 15 Dec 2023 714th TobyBoyne 🇬🇧 758 65 11ms 21 Jan 2021 714th 77Tigers 758 65 32ms 1 Mar 2021 714th knutae 🇳🇴 758 65 10ms 29 Jun 2021 714th ehulinsky 🇺🇸 758 65 13ms 10 Nov 2021 714th guilhem-roy 🇫🇷 758 65 12ms 28 Feb 2022 714th martinnorling 🇸🇪 758 65 10ms 8 Mar 2022 714th IshanPanpaliya 758 65 11ms 3 May 2023 First Prev 641–720 of 1,909 Next Last