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 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 Chars Time Submitted 641st Salutations45 790 59 12ms 9 Jan 2025 642nd clockworknazo 790 83 17ms 26 Sep 2022 643rd ashtraypettingzoo 🇺🇸 789 19 2ms 3 Apr 2023 643rd AlephSquirrel 789 19 2ms 8 Nov 2025 645th MeWhenI 🇻🇦 789 63 154ms 16 Nov 2022 646th MeWhenI 🇻🇦 789 83 3ms 10 Sep 2022 647th kkoenig 788 109 311ms 5 Jan 2024 648th prplz 🇦🇺 786 46 271ms 24 Jan 2021 648th TimCurwick 🇺🇸 786 46 235ms 26 Jan 2021 648th SirBogman 🇺🇸 786 46 265ms 2 Feb 2024 651st SirBogman 🇺🇸 786 91 38ms 3 Jun 2025 652nd Shanethegamer 🇺🇸 784 76 387ms 13 Dec 2021 652nd Yax42 🇫🇷 784 76 448ms 5 May 2025 654th Yewzir 🇧🇪 784 82 114ms 28 Mar 2024 655th nwellnhof 🇩🇪 782 38 162ms 21 Oct 2021 656th apourchot 782 63 18ms 13 Feb 2021 656th neihousaigaai 782 63 10ms 10 Apr 2021 656th lechevalier 782 63 10ms 9 Aug 2021 656th commandz0 🇺🇸 782 63 13ms 19 Sep 2022 656th fourth-bit 782 63 11ms 21 Nov 2022 656th FortuiteMan 🇫🇷 782 63 31ms 8 Sep 2023 656th ssbhatt4321 782 63 27ms 14 Oct 2023 656th dokutan 782 63 18ms 1 Apr 2025 664th janbehrens 🇩🇪 782 91 57ms 20 Nov 2022 664th snyderek 🇺🇸 782 91 61ms 21 Nov 2024 664th dokutan 782 91 60ms 18 Jul 2025 667th Waffle3z 781 54 38ms 19 Jan 2021 667th olivermrose 🇺🇸 781 54 35ms 28 Sep 2021 667th KatieLG 🇬🇧 781 54 39ms 9 Jan 2023 667th Andriamanitra 🇫🇮 781 54 37ms 20 Jul 2023 671st GrayJoKing 🇦🇺 781 68 2ms 21 Jan 2021 671st m-tkach 🇺🇦 781 68 2ms 25 Apr 2022 671st MeWhenI 🇻🇦 781 68 2ms 11 Nov 2022 674th MeWhenI 🇻🇦 779 88 457ms 28 Feb 2022 675th Shanethegamer 🇺🇸 778 106 33ms 20 Jan 2025 676th rak1507 🇬🇧 777 60 10ms 20 Jan 2021 676th Shanethegamer 🇺🇸 777 60 9ms 26 Sep 2021 676th duckyluuk 🇳🇱 777 60 9ms 4 Oct 2024 679th anter69 🇭🇺 776 59 1,306ms 24 Feb 2023 679th SirBogman 🇺🇸 776 59 1,208ms 10 Jun 2024 681st commandz0 🇺🇸 775 62 417ms 15 Jan 2024 681st HumanoidCPU 775 62 409ms 3 Jun 2024 681st dokutan 775 62 379ms 14 Feb 2026 684th scpchicken 🇵🇼 774 48 3ms 15 Dec 2022 685th ovs-code 🇩🇪 774 142 11ms 31 Mar 2023 686th GrayJoKing 🇦🇺 771 55 160ms 6 Aug 2024 687th Shanethegamer 🇺🇸 771 89 468ms 26 Jul 2023 688th mousetail 🇳🇱 771 98 126ms 3 Oct 2024 689th NewDefectus 🇮🇱 770 24 4ms 25 Oct 2021 690th MeWhenI 🇻🇦 770 47 268ms 28 Jan 2023 691st RDShah 770 64 11ms 17 Jan 2021 691st andre-lameirinhas 🇵🇹 770 64 11ms 22 Feb 2021 691st stertooy 🇧🇪 770 64 11ms 10 Jun 2024 691st Terobero 770 64 20ms 6 Sep 2024 691st moustave 770 64 12ms 5 May 2025 691st Code-Coder-coder 770 64 11ms 25 Nov 2025 691st Lv0Sys 🇵🇱 770 64 11ms 4 Dec 2025 698th LostSyntax21 🇬🇧 767 55 36ms 2 Oct 2024 699th MeWhenI 🇻🇦 767 89 103ms 25 Dec 2022 700th retrohun 765 63 102ms 23 Jan 2023 701st Shanethegamer 🇺🇸 765 65 147ms 22 May 2021 702nd lynn 765 78 152ms 16 Nov 2021 703rd Shanethegamer 🇺🇸 765 93 54ms 12 Jan 2022 704th SirBogman 🇺🇸 764 31 45ms 7 Oct 2022 705th Waffle3z 764 61 9ms 20 Jan 2021 705th didion0 🇺🇸 764 61 10ms 9 Feb 2021 705th KrausRaus 🇺🇸 764 61 11ms 19 Feb 2021 705th tayloia 🇬🇧 764 61 10ms 29 May 2022 709th MeWhenI 🇻🇦 764 108 27ms 7 Jun 2023 710th Shanethegamer 🇺🇸 763 60 346ms 2 Jul 2021 710th alemelis 763 60 2,055ms 14 Aug 2024 712th DialFrost 🇸🇬 762 86 5ms 10 Oct 2023 713th albanian-laundromat 761 60 1,139ms 1 Oct 2025 714th kcinnu 🇱🇹 760 146 1,731ms 17 May 2024 715th c0d3-4-F00d 🇩🇪 759 70 2ms 18 Mar 2022 715th Alex-x90 🇺🇸 759 70 2ms 6 Mar 2023 715th dokutan 759 70 2ms 18 Jul 2025 718th SirBogman 🇺🇸 759 86 115ms 24 Jan 2021 718th strout 759 86 124ms 15 Dec 2023 720th TobyBoyne 🇬🇧 758 65 11ms 21 Jan 2021 First Prev 641–720 of 1,919 Next Last