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 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 Calendar 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 NFA Simulator 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 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 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 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 Calendar 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 NFA Simulator 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 600th nkoppel 795 62 10ms 19 Oct 2022 600th AodhanDalton 795 62 10ms 4 Nov 2022 600th nstearns96 🇬🇧 795 62 17ms 28 Nov 2022 600th adamnielson42 🇺🇸 795 62 10ms 10 Jan 2024 600th jbjd 795 62 10ms 2 Mar 2024 600th HumanoidCPU 795 62 13ms 3 Jun 2024 600th jacekwladzinski 795 62 12ms 4 Oct 2025 600th Mabeloid 🇳🇴 795 62 14ms 26 Oct 2025 609th Shanethegamer 🇺🇸 795 84 343ms 25 Sep 2025 610th TrueBoxGuy 795 95 122ms 24 Sep 2025 611th Shanethegamer 🇺🇸 795 108 265ms 26 Sep 2021 612th GrayJoKing 🇦🇺 794 86 9ms 15 Aug 2023 612th Shanethegamer 🇺🇸 794 86 11ms 11 Jan 2024 614th MichalMarsalek 🇨🇿 793 84 123ms 6 Jan 2023 615th emgordon154 792 67 3ms 22 Apr 2025 616th Salutations45 790 59 10ms 9 Jan 2025 617th clockworknazo 790 83 18ms 26 Sep 2022 618th ashtraypettingzoo 🇺🇸 789 19 2ms 3 Apr 2023 618th AlephSquirrel 789 19 2ms 25 days ago 620th MeWhenI 🇻🇦 789 63 107ms 16 Nov 2022 621st MeWhenI 🇻🇦 789 83 3ms 10 Sep 2022 622nd kkoenig 788 109 272ms 5 Jan 2024 623rd prplz 🇦🇺 786 46 224ms 24 Jan 2021 623rd TimCurwick 🇺🇸 786 46 200ms 26 Jan 2021 623rd SirBogman 🇺🇸 786 46 208ms 2 Feb 2024 626th SirBogman 🇺🇸 786 91 47ms 3 Jun 2025 627th Yewzir 🇧🇪 784 82 104ms 28 Mar 2024 628th Shanethegamer 🇺🇸 783 76 322ms 13 Dec 2021 628th Yax42 🇫🇷 783 76 337ms 5 May 2025 630th nwellnhof 🇩🇪 782 38 138ms 21 Oct 2021 631st apourchot 782 63 19ms 13 Feb 2021 631st neihousaigaai 782 63 11ms 10 Apr 2021 631st lechevalier 782 63 12ms 9 Aug 2021 631st commandblockguy 🇺🇸 782 63 12ms 19 Sep 2022 631st fourth-bit 782 63 11ms 21 Nov 2022 631st FortuiteMan 🇫🇷 782 63 25ms 8 Sep 2023 631st ssbhatt4321 782 63 25ms 14 Oct 2023 631st dokutan 782 63 17ms 1 Apr 2025 639th janbehrens 🇩🇪 782 91 55ms 20 Nov 2022 639th snyderek 🇺🇸 782 91 53ms 21 Nov 2024 639th dokutan 782 91 56ms 18 Jul 2025 642nd Waffle3z 780 54 36ms 19 Jan 2021 642nd olivermrose 🇺🇸 780 54 34ms 28 Sep 2021 642nd KatieLG 🇬🇧 780 54 41ms 9 Jan 2023 642nd Andriamanitra 🇫🇮 780 54 43ms 20 Jul 2023 646th GrayJoKing 🇦🇺 780 68 2ms 21 Jan 2021 646th m-tkach 🇺🇦 780 68 2ms 25 Apr 2022 646th MeWhenI 🇻🇦 780 68 2ms 11 Nov 2022 649th DialFrost 🇸🇬 780 142 1,600ms 13 Sep 2025 650th MeWhenI 🇻🇦 779 88 416ms 28 Feb 2022 651st Shanethegamer 🇺🇸 778 106 34ms 20 Jan 2025 652nd rak1507 🇬🇧 777 60 9ms 20 Jan 2021 652nd Shanethegamer 🇺🇸 777 60 9ms 26 Sep 2021 652nd duckyluuk 🇳🇱 777 60 9ms 4 Oct 2024 655th anter69 🇭🇺 776 59 982ms 24 Feb 2023 655th SirBogman 🇺🇸 776 59 1,208ms 10 Jun 2024 657th scpchicken 🇵🇼 774 48 3ms 15 Dec 2022 658th commandblockguy 🇺🇸 774 62 435ms 15 Jan 2024 658th HumanoidCPU 774 62 384ms 3 Jun 2024 660th ovs-code 🇩🇪 774 142 12ms 31 Mar 2023 661st GrayJoKing 🇦🇺 771 55 135ms 6 Aug 2024 662nd Shanethegamer 🇺🇸 771 89 485ms 26 Jul 2023 663rd mousetail 🇳🇱 771 98 123ms 3 Oct 2024 664th NewDefectus 🇮🇱 770 24 5ms 25 Oct 2021 665th MeWhenI 🇻🇦 770 47 210ms 28 Jan 2023 666th RDShah 770 64 10ms 17 Jan 2021 666th andre-lameirinhas 🇵🇹 770 64 10ms 22 Feb 2021 666th stertooy 🇧🇪 770 64 10ms 10 Jun 2024 666th Terobero 770 64 18ms 6 Sep 2024 666th moustave 770 64 11ms 5 May 2025 666th Code-Coder-coder 770 64 12ms 8 days ago 672nd MeWhenI 🇻🇦 767 89 101ms 25 Dec 2022 673rd LostSyntax21 🇬🇧 766 55 41ms 2 Oct 2024 674th retrohun 765 63 120ms 23 Jan 2023 675th Shanethegamer 🇺🇸 765 65 108ms 22 May 2021 First Prev 601–675 of 1,858 Next Last