Kolakoski Sequence in all languages in bytes. 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 Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 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 ArkScript 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 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 ArkScript 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 Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 881st Yewzir 🇧🇪 682 90 421ms 14 Oct 2023 882nd Shanethegamer 🇺🇸 680 126 24ms 8 Jul 2021 883rd jameslindesay 679 74 11ms 24 Feb 2021 883rd PkmnQ 679 74 37ms 5 May 2024 883rd HumanoidCPU 679 74 11ms 3 Jun 2024 883rd RedzGoose 🇦🇺 679 74 11ms 14 Oct 2024 883rd yokasuretsu 679 74 11ms 13 Jan 2025 888th I-Love-47 🇺🇦 679 106 68ms 10 Feb 2022 889th dokutan 678 59 3ms 18 Jul 2025 890th AdrienHache 🇫🇷 674 91 429ms 31 Dec 2023 891st janbehrens 🇩🇪 673 68 1,239ms 9 Apr 2021 892nd msbranicky 672 80 4ms 11 Oct 2023 893rd 5quiwyrm 670 54 288ms 5 Dec 2024 894th tatzyr 🇯🇵 670 63 36ms 29 Dec 2024 895th Trunksistor 🇫🇷 670 75 11ms 25 May 2022 895th celiendonze 🇨🇭 670 75 12ms 16 Jun 2023 895th qwjhvbxi 670 75 11ms 9 Feb 2024 895th wenbang24 670 75 14ms 6 Apr 2024 899th SirBogman 🇺🇸 667 108 60ms 3 Jan 2022 900th DialFrost 🇸🇬 666 56 81ms 22 Jul 2024 901st CaedenHarper 🇨🇦 666 70 10ms 31 Jan 2025 902nd Natanaelel 🇸🇪 663 56 4ms 20 Jan 2024 903rd DialFrost 🇸🇬 663 75 175ms 3 Jun 2025 904th dokutan 662 69 1,041ms 30 Aug 2025 905th 77Tigers 662 114 149ms 9 Apr 2024 906th Waffle3z 661 76 14ms 20 Jan 2021 906th hellwue 661 76 11ms 16 Nov 2023 906th dokutan 661 76 18ms 24 Mar 2025 909th HumanoidCPU 658 73 417ms 3 Jun 2024 910th uttumuttu 🇫🇮 656 71 10ms 8 Jan 2022 910th olleicua 🇺🇸 656 71 9ms 20 Feb 2024 912th emgordon154 655 70 141ms 6 Sep 2024 913th msbranicky 654 134 294ms 3 Oct 2023 914th dokutan 653 94 391ms 18 Jul 2025 915th albanian-laundromat 653 98 39ms 28 Nov 2025 916th olivermrose 🇺🇸 652 57 4ms 24 Aug 2021 917th f-tucker 652 77 11ms 2 Feb 2024 917th undefinedRyan 652 77 14ms 19 Apr 2025 917th Emutis 🇱🇹 652 77 12ms 12 Sep 2025 920th boxjelly 649 65 41ms 11 Feb 2021 920th msbranicky 649 65 42ms 12 Sep 2023 922nd Shanethegamer 🇺🇸 649 97 7ms 22 Dec 2023 923rd janbehrens 🇩🇪 649 135 282ms 13 Jun 2021 924th jwhear 🇺🇸 649 171 1,847ms 1 Oct 2024 925th MeWhenI 🇻🇦 646 71 152ms 3 Aug 2024 926th AkashTandon167 644 78 11ms 25 May 2021 926th jhpaques 🇫🇷 644 78 20ms 30 Nov 2022 928th johnnythedoggie 644 106 110ms 3 Mar 2021 928th snoozingnewt 🇨🇦 644 106 95ms 21 Nov 2025 930th rboath 643 58 88ms 8 Jan 2025 931st SirBogman 🇺🇸 643 84 2ms 14 Dec 2021 932nd emgordon154 643 98 9ms 10 Dec 2024 933rd MateuszPietrzak 🇵🇱 643 112 61ms 16 Jan 2024 934th annaproxy 642 93 99ms 24 Dec 2022 935th NickTheEASDude 🇺🇸 642 95 1ms 1 Jul 2024 936th CaedenHarper 🇨🇦 641 107 492ms 6 Oct 2025 937th nephila-nacrea 🇬🇧 640 58 3ms 3 Feb 2021 938th KatieLG 🇬🇧 640 77 235ms 2 Oct 2022 939th alomiF 640 102 124ms 4 Nov 2024 940th Bubbler-4 639 97 72ms 13 Sep 2023 941st Maznek 638 73 10ms 30 Jun 2023 942nd MeWhenI 🇻🇦 637 82 10ms 21 Jul 2023 943rd ashtraypettingzoo 🇺🇸 636 36 32ms 23 Feb 2023 944th emgordon154 636 44 50ms 19 days ago 945th twocatsinatrenchcoat 636 79 9ms 29 Mar 2022 945th SniperSmiley 🇺🇸 636 79 41ms 23 Jun 2022 945th Glinte 636 79 17ms 14 Dec 2023 945th Bmrl7 636 79 13ms 19 Mar 2024 945th acotis 636 79 12ms 3 days ago 950th Shanethegamer 🇺🇸 635 57 247ms 27 Jul 2023 951st sreyfe 635 119 160ms 9 Jun 2024 952nd edsrzf 🇳🇿 635 138 294ms 21 Dec 2024 953rd MeWhenI 🇻🇦 633 90 2,346ms 24 Oct 2024 954th SirFireball3521 632 58 127ms 2 Mar 2023 955th dokutan 632 76 446ms 24 Mar 2025 956th emgordon154 632 186 1,483ms 30 May 2025 957th NewDefectus 🇮🇱 630 59 6ms 25 Oct 2021 958th janbehrens 🇩🇪 630 136 25ms 9 Jul 2021 959th bastienvoirin 🇫🇷 628 80 15ms 4 Feb 2021 959th argusdusty 🇺🇸 628 80 18ms 25 Mar 2021 First Prev 881–960 of 1,931 Next Last