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 751st Stockoh 🇫🇷 725 68 33ms 25 Dec 2021 751st Bonjour27891 🇻🇳 725 68 36ms 1 Sep 2022 751st trist224 🇫🇷 725 68 36ms 18 Oct 2022 751st mousetail 🇳🇱 725 68 34ms 11 Aug 2023 751st Command-Master 725 68 36ms 24 Sep 2023 751st firegene 🇮🇪 725 68 35ms 12 Oct 2024 751st JunkIce 725 68 23ms 24 Nov 2024 758th ovs-code 🇩🇪 725 72 11ms 16 Jul 2023 759th yzhs 🇩🇪 725 90 158ms 24 Jul 2021 760th dokutan 724 118 26ms 18 Jul 2025 761st jacobly0 🇺🇸 724 153 1,717ms 22 Apr 2024 762nd primo-ppcg 🇹🇭 720 47 26ms 5 Feb 2022 763rd Yewzir 🇧🇪 719 91 3ms 28 Mar 2024 764th edsrzf 🇳🇿 718 95 6ms 24 Nov 2024 765th Alex-x90 🇺🇸 718 99 382ms 23 Jun 2022 766th GolfingSuccess 🇬🇷 717 33 50ms 22 Jul 2022 767th igmcdowell 717 65 9ms 23 Nov 2021 768th Shanethegamer 🇺🇸 717 74 2ms 18 May 2022 769th MeWhenI 🇻🇦 717 75 8ms 9 Oct 2023 770th prplz 🇦🇺 717 91 161ms 25 Jan 2021 771st msbranicky 716 67 582ms 17 Jan 2024 772nd marshallward 🇺🇸 716 100 44ms 7 May 2025 773rd NewDefectus 🇮🇱 714 21 2ms 14 Jan 2022 774th prplz 🇦🇺 714 52 3ms 5 Feb 2021 775th tatzyr 🇯🇵 714 59 49ms 29 Dec 2024 776th abailey2020 🇺🇸 714 69 10ms 19 Feb 2021 776th Anonymousellama21 714 69 10ms 15 May 2022 776th TaserTheFox 🇺🇸 714 69 37ms 16 Feb 2023 776th Jacob385 714 69 45ms 22 Apr 2024 780th elgan65536 712 106 166ms 26 Oct 2023 781st emgordon154 711 80 3,090ms 9 Aug 2025 782nd MeWhenI 🇻🇦 711 90 1,280ms 14 Jun 2023 783rd CaedenHarper 🇨🇦 710 64 734ms 6 Oct 2025 784th Feniske 🇫🇷 709 51 229ms 21 Nov 2023 785th chordowl 709 92 137ms 17 Mar 2021 786th marcin7Cd 709 103 30ms 12 Feb 2021 787th CaedenHarper 🇨🇦 708 84 354ms 17 Oct 2025 788th rucin93 🇵🇱 707 60 131ms 9 Aug 2024 789th omurakazuaki 🇯🇵 706 66 9ms 18 Feb 2021 789th BambooleanLogic 🇸🇪 706 66 10ms 22 Aug 2022 789th coreynash 706 66 9ms 21 Oct 2023 789th two-bad 🇬🇧 706 66 9ms 24 Nov 2023 789th dylanarmstrong 706 66 10ms 15 Jan 2024 789th madeforlosers 706 66 9ms 5 Nov 2025 795th Stockoh 🇫🇷 706 68 365ms 24 Jun 2024 795th JunkIce 706 68 415ms 3 Dec 2024 797th typeswitch-dev 🇵🇹 705 74 9ms 7 Aug 2023 798th antimon2 🇯🇵 704 65 475ms 19 Jan 2021 798th msbranicky 704 65 1,074ms 12 Sep 2023 800th osmith93 704 70 24ms 14 Jun 2021 800th ridingqwerty 🇺🇸 704 70 11ms 23 Feb 2024 800th mbittner20 704 70 11ms 15 Jul 2024 800th RaBa21 🇭🇺 704 70 11ms 18 Jul 2025 804th Shanethegamer 🇺🇸 704 91 41ms 16 Jun 2022 805th Herbert00709 🇵🇱 704 101 55ms 19 Nov 2024 806th SnowballSH 702 60 36ms 12 Feb 2021 806th aksyristos 702 60 48ms 28 Feb 2023 808th UnderKoen 🇳🇱 700 134 12ms 20 Jan 2025 809th MeWhenI 🇻🇦 700 238 12ms 29 Aug 2023 810th jared-hughes 699 44 7ms 31 Jul 2022 811th Shanethegamer 🇺🇸 699 77 13ms 9 Oct 2023 812th NewDefectus 🇮🇱 698 76 2ms 25 Oct 2021 812th JohandeRuiter 🇳🇱 698 76 3ms 3 Dec 2023 814th targrik 698 123 271ms 10 Jul 2025 815th AlephSquirrel 696 34 51ms 30 Dec 2022 816th neihousaigaai 696 67 10ms 10 Apr 2021 817th Jacob385 696 69 401ms 22 Apr 2024 818th jared-hughes 696 159 1,500ms 16 Sep 2025 819th DialFrost 🇸🇬 695 56 76ms 22 Jul 2024 820th targrik 695 57 5ms 26 Aug 2025 821st SnowballSH 694 71 10ms 12 Feb 2021 821st Andre3582 694 71 11ms 18 Mar 2021 821st PhysicDev 🇫🇷 694 71 10ms 20 May 2021 821st Alban-Boissard 694 71 12ms 10 Jun 2025 825th boxjelly 694 94 139ms 21 Jan 2021 First Prev 751–825 of 1,858 Next Last