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 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 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 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 824th PhysicDev 🇫🇷 694 71 11ms 20 May 2021 824th Alban-Boissard 694 71 12ms 10 Jun 2025 828th boxjelly 694 94 114ms 21 Jan 2021 828th YAJUE114514 694 94 133ms 24 Jul 2025 830th Espiobest 691 61 34ms 13 Feb 2021 830th DaCuteRaccoon 691 61 34ms 9 Dec 2022 832nd edsrzf 🇳🇿 691 91 19ms 21 Dec 2024 833rd JGDoerrer 690 103 384ms 5 Jan 2022 833rd tailorspy 690 103 54ms 29 Oct 2023 835th Shanethegamer 🇺🇸 690 106 17ms 4 Oct 2024 836th msbranicky 689 95 5ms 11 Aug 2023 837th NewDefectus 🇮🇱 688 32 34ms 20 Dec 2021 838th GolfingSuccess 🇬🇷 688 69 33ms 17 Aug 2024 839th Andriamanitra 🇫🇮 687 95 148ms 20 Jul 2023 840th KasperKivimaeki 🇫🇮 687 125 260ms 3 Oct 2025 841st LeeCamp 684 72 11ms 16 Feb 2022 841st LukasFolwarczny 🇨🇿 684 72 11ms 16 Sep 2022 841st CutSandstone 684 72 36ms 8 Jul 2024 844th msbranicky 684 89 1ms 26 Sep 2023 845th dokutan 678 59 3ms 18 Jul 2025 846th Shanethegamer 🇺🇸 678 126 24ms 8 Jul 2021 847th jared-hughes 676 35 43ms 31 Jul 2022 847th Natanaelel 🇸🇪 676 35 47ms 18 Aug 2022 849th SirBogman 🇺🇸 676 44 314ms 22 Oct 2021 850th Yewzir 🇧🇪 676 88 327ms 14 Oct 2023 851st richard-oelze 🇩🇪 675 73 29ms 4 Apr 2021 851st mauro-1 🇮🇹 675 73 9ms 18 Aug 2021 851st gchenfc 675 73 9ms 24 Jan 2022 851st hiichbindermax 675 73 11ms 26 Feb 2022 851st Omega65536 🇩🇪 675 73 11ms 24 Nov 2022 851st sandorstormen 675 73 11ms 18 Feb 2023 851st Mr-McChicken 675 73 11ms 15 Oct 2023 851st Masttest 675 73 10ms 21 Feb 2024 859th dokutan 675 99 805ms 24 Sep 2025 860th janbehrens 🇩🇪 673 68 1,067ms 9 Apr 2021 861st madex 🇩🇪 672 79 2ms 11 Jul 2024 862nd msbranicky 672 80 4ms 11 Oct 2023 863rd rboath 671 58 88ms 8 Jan 2025 864th 5quiwyrm 670 54 254ms 5 Dec 2024 865th I-Love-47 🇺🇦 670 106 56ms 10 Feb 2022 866th CaedenHarper 🇨🇦 666 70 9ms 31 Jan 2025 867th jameslindesay 666 74 11ms 24 Feb 2021 867th PkmnQ 666 74 37ms 5 May 2024 867th RedzGoose 🇦🇺 666 74 13ms 14 Oct 2024 867th yokasuretsu 666 74 10ms 13 Jan 2025 871st Natanaelel 🇸🇪 663 56 3ms 20 Jan 2024 872nd MeWhenI 🇻🇦 663 69 307ms 15 Feb 2023 872nd MarcMush 🇫🇷 663 69 287ms 12 Feb 2024 872nd Yewzir 🇧🇪 663 69 342ms 5 Apr 2024 875th DialFrost 🇸🇬 663 75 112ms 3 Jun 2025 876th 77Tigers 662 114 133ms 9 Apr 2024 877th dokutan 658 69 740ms 30 Aug 2025 878th SirBogman 🇺🇸 658 108 54ms 3 Jan 2022 879th Trunksistor 🇫🇷 657 75 10ms 25 May 2022 879th celiendonze 🇨🇭 657 75 11ms 16 Jun 2023 879th qwjhvbxi 657 75 10ms 9 Feb 2024 879th wenbang24 657 75 14ms 6 Apr 2024 883rd uttumuttu 🇫🇮 656 71 9ms 8 Jan 2022 883rd olleicua 🇺🇸 656 71 9ms 20 Feb 2024 885th annaproxy 656 91 95ms 13 Jan 2023 886th AdrienHache 🇫🇷 654 91 374ms 31 Dec 2023 887th emgordon154 653 65 140ms 6 Sep 2024 888th albanian-laundromat 653 98 39ms 15 days ago 889th olivermrose 🇺🇸 652 57 3ms 24 Aug 2021 890th boxjelly 649 65 34ms 11 Feb 2021 890th msbranicky 649 65 38ms 12 Sep 2023 892nd Waffle3z 648 76 11ms 20 Jan 2021 892nd hellwue 648 76 10ms 16 Nov 2023 892nd yuchuehw 648 76 17ms 18 Jan 2024 895th Shanethegamer 🇺🇸 648 97 8ms 22 Dec 2023 896th jwhear 🇺🇸 647 171 1,847ms 1 Oct 2024 897th johnnythedoggie 644 106 107ms 3 Mar 2021 897th snoozingnewt 🇨🇦 644 106 94ms 22 days ago 899th NickTheEASDude 🇺🇸 641 95 1ms 1 Jul 2024 900th emgordon154 641 98 10ms 10 Dec 2024 First Prev 826–900 of 1,865 Next Last