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 826th boxjelly 694 94 139ms 21 Jan 2021 826th YAJUE114514 694 94 142ms 24 Jul 2025 828th Espiobest 691 61 50ms 13 Feb 2021 828th DaCuteRaccoon 691 61 52ms 9 Dec 2022 830th edsrzf 🇳🇿 691 91 21ms 21 Dec 2024 831st JGDoerrer 691 103 373ms 5 Jan 2022 831st tailorspy 691 103 57ms 29 Oct 2023 833rd msbranicky 689 95 7ms 11 Aug 2023 834th Shanethegamer 🇺🇸 689 106 19ms 4 Oct 2024 835th NewDefectus 🇮🇱 688 32 38ms 20 Dec 2021 836th GolfingSuccess 🇬🇷 688 69 35ms 17 Aug 2024 837th Andriamanitra 🇫🇮 687 95 186ms 20 Jul 2023 838th KasperKivimaeki 🇫🇮 687 125 247ms 3 Oct 2025 839th LeeCamp 684 72 11ms 16 Feb 2022 839th LukasFolwarczny 🇨🇿 684 72 11ms 16 Sep 2022 839th CutSandstone 684 72 39ms 8 Jul 2024 842nd msbranicky 684 89 1ms 26 Sep 2023 843rd Shanethegamer 🇺🇸 678 126 27ms 8 Jul 2021 844th dokutan 677 59 3ms 18 Jul 2025 845th jared-hughes 676 35 54ms 31 Jul 2022 845th Natanaelel 🇸🇪 676 35 48ms 18 Aug 2022 847th SirBogman 🇺🇸 676 44 208ms 22 Oct 2021 848th Yewzir 🇧🇪 676 88 325ms 14 Oct 2023 849th richard-oelze 🇩🇪 675 73 31ms 4 Apr 2021 849th mauro-1 🇮🇹 675 73 10ms 18 Aug 2021 849th gchenfc 675 73 11ms 24 Jan 2022 849th hiichbindermax 675 73 11ms 26 Feb 2022 849th Omega65536 🇩🇪 675 73 11ms 24 Nov 2022 849th sandorstormen 675 73 12ms 18 Feb 2023 849th Mr-McChicken 675 73 12ms 15 Oct 2023 849th Masttest 675 73 10ms 21 Feb 2024 857th dokutan 675 99 344ms 24 Sep 2025 858th janbehrens 🇩🇪 673 68 1,067ms 9 Apr 2021 859th madex 🇩🇪 672 79 2ms 11 Jul 2024 860th msbranicky 672 80 4ms 11 Oct 2023 861st rboath 671 58 76ms 8 Jan 2025 862nd I-Love-47 🇺🇦 671 106 56ms 10 Feb 2022 863rd 5quiwyrm 670 54 234ms 5 Dec 2024 864th CaedenHarper 🇨🇦 666 70 9ms 31 Jan 2025 865th jameslindesay 666 74 12ms 24 Feb 2021 865th PkmnQ 666 74 36ms 5 May 2024 865th RedzGoose 🇦🇺 666 74 11ms 14 Oct 2024 865th yokasuretsu 666 74 11ms 13 Jan 2025 869th snoozingnewt 🇨🇦 666 98 112ms 30 Oct 2025 870th Natanaelel 🇸🇪 663 56 4ms 20 Jan 2024 871st MeWhenI 🇻🇦 663 69 340ms 15 Feb 2023 871st MarcMush 🇫🇷 663 69 287ms 12 Feb 2024 871st Yewzir 🇧🇪 663 69 342ms 5 Apr 2024 874th DialFrost 🇸🇬 663 75 112ms 3 Jun 2025 875th 77Tigers 662 114 142ms 9 Apr 2024 876th SirBogman 🇺🇸 659 108 56ms 3 Jan 2022 877th dokutan 658 69 717ms 30 Aug 2025 878th Trunksistor 🇫🇷 657 75 11ms 25 May 2022 878th celiendonze 🇨🇭 657 75 12ms 16 Jun 2023 878th qwjhvbxi 657 75 12ms 9 Feb 2024 878th wenbang24 657 75 13ms 6 Apr 2024 882nd uttumuttu 🇫🇮 656 71 9ms 8 Jan 2022 882nd olleicua 🇺🇸 656 71 9ms 20 Feb 2024 884th annaproxy 656 91 95ms 13 Jan 2023 885th AdrienHache 🇫🇷 654 91 402ms 31 Dec 2023 886th emgordon154 653 65 137ms 6 Sep 2024 887th albanian-laundromat 653 98 39ms 6 days ago 888th olivermrose 🇺🇸 652 57 4ms 24 Aug 2021 889th boxjelly 649 65 37ms 11 Feb 2021 889th msbranicky 649 65 43ms 12 Sep 2023 891st Waffle3z 648 76 11ms 20 Jan 2021 891st hellwue 648 76 11ms 16 Nov 2023 891st yuchuehw 648 76 17ms 18 Jan 2024 894th Bubbler-4 648 97 77ms 13 Sep 2023 894th Shanethegamer 🇺🇸 648 97 8ms 22 Dec 2023 896th jwhear 🇺🇸 647 171 1,651ms 1 Oct 2024 897th johnnythedoggie 644 106 105ms 3 Mar 2021 897th snoozingnewt 🇨🇦 644 106 97ms 13 days ago 899th NickTheEASDude 🇺🇸 641 95 1ms 1 Jul 2024 900th emgordon154 641 98 9ms 10 Dec 2024 First Prev 826–900 of 1,860 Next Last