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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 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 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 ArkScript 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 ArkScript 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 Calendar 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 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 Bytes Time Submitted 641st SirBogman 🇺🇸 791 31 51ms 7 Oct 2022 642nd janbehrens 🇩🇪 791 91 57ms 20 Nov 2022 642nd snyderek 🇺🇸 791 91 53ms 21 Nov 2024 642nd dokutan 791 91 55ms 18 Jul 2025 645th Salutations45 790 59 10ms 9 Jan 2025 646th Shanethegamer 🇺🇸 790 89 457ms 26 Jul 2023 647th ashtraypettingzoo 🇺🇸 789 19 2ms 3 Apr 2023 647th AlephSquirrel 789 19 2ms 8 Nov 2025 649th MeWhenI 🇻🇦 789 63 114ms 16 Nov 2022 650th MeWhenI 🇻🇦 789 83 3ms 10 Sep 2022 651st kkoenig 789 111 250ms 5 Jan 2024 652nd prplz 🇦🇺 786 46 248ms 24 Jan 2021 652nd TimCurwick 🇺🇸 786 46 238ms 26 Jan 2021 652nd SirBogman 🇺🇸 786 46 254ms 2 Feb 2024 655th SirBogman 🇺🇸 786 91 38ms 3 Jun 2025 656th RDShah 785 64 10ms 17 Jan 2021 656th andre-lameirinhas 🇵🇹 785 64 10ms 22 Feb 2021 656th stertooy 🇧🇪 785 64 10ms 10 Jun 2024 656th Terobero 785 64 20ms 6 Sep 2024 656th moustave 785 64 11ms 5 May 2025 656th Code-Coder-coder 785 64 11ms 25 Nov 2025 656th Lv0Sys 🇵🇱 785 64 10ms 4 Dec 2025 663rd Yewzir 🇧🇪 784 82 105ms 28 Mar 2024 664th Shanethegamer 🇺🇸 782 63 352ms 2 Jul 2021 665th Waffle3z 781 54 37ms 19 Jan 2021 665th KatieLG 🇬🇧 781 54 37ms 9 Jan 2023 665th Andriamanitra 🇫🇮 781 54 38ms 20 Jul 2023 668th Shanethegamer 🇺🇸 778 106 33ms 20 Jan 2025 669th rak1507 🇬🇧 777 60 10ms 20 Jan 2021 669th Shanethegamer 🇺🇸 777 60 9ms 26 Sep 2021 669th duckyluuk 🇳🇱 777 60 10ms 4 Oct 2024 672nd anter69 🇭🇺 776 59 1,306ms 24 Feb 2023 672nd SirBogman 🇺🇸 776 59 1,208ms 10 Jun 2024 674th NewDefectus 🇮🇱 774 25 4ms 25 Oct 2021 675th scpchicken 🇵🇼 774 48 3ms 15 Dec 2022 676th commandz0 🇺🇸 774 62 450ms 15 Jan 2024 677th Shanethegamer 🇺🇸 774 93 57ms 12 Jan 2022 678th ovs-code 🇩🇪 774 142 12ms 31 Mar 2023 679th TobyBoyne 🇬🇧 773 65 10ms 21 Jan 2021 679th 77Tigers 773 65 30ms 1 Mar 2021 679th knutae 🇳🇴 773 65 10ms 29 Jun 2021 679th ehulinsky 🇺🇸 773 65 13ms 10 Nov 2021 679th guilhem-roy 🇫🇷 773 65 10ms 28 Feb 2022 679th martinnorling 🇸🇪 773 65 10ms 8 Mar 2022 679th fgrosshans 🇫🇷 773 65 11ms 12 Jul 2022 679th IshanPanpaliya 773 65 10ms 3 May 2023 679th nooberitess 773 65 11ms 8 Apr 2025 679th robin-scragg 773 65 10ms 21 Oct 2025 689th MeWhenI 🇻🇦 772 59 1,030ms 15 Sep 2025 690th c0d3-4-F00d 🇩🇪 772 70 2ms 18 Mar 2022 690th Alex-x90 🇺🇸 772 70 2ms 6 Mar 2023 690th dokutan 772 70 5ms 18 Jul 2025 693rd mousetail 🇳🇱 771 98 111ms 3 Oct 2024 694th MeWhenI 🇻🇦 770 47 262ms 28 Jan 2023 695th LostSyntax21 🇬🇧 767 55 51ms 2 Oct 2024 696th MeWhenI 🇻🇦 767 89 103ms 25 Dec 2022 697th emgordon154 766 32 43ms 19 Oct 2025 698th retrohun 765 63 102ms 23 Jan 2023 699th Shanethegamer 🇺🇸 765 65 105ms 22 May 2021 700th lynn 765 78 150ms 16 Nov 2021 701st rucin93 🇵🇱 764 60 131ms 9 Aug 2024 702nd Waffle3z 764 61 9ms 20 Jan 2021 702nd didion0 🇺🇸 764 61 10ms 9 Feb 2021 702nd KrausRaus 🇺🇸 764 61 11ms 19 Feb 2021 702nd tayloia 🇬🇧 764 61 10ms 29 May 2022 706th MeWhenI 🇻🇦 764 108 27ms 7 Jun 2023 707th ScottHamper 762 90 502ms 30 Nov 2025 708th ArmaanAS 761 66 11ms 4 Apr 2021 708th quimey 761 66 11ms 23 Jun 2023 710th kcinnu 🇱🇹 760 146 1,731ms 17 May 2024 711th albanian-laundromat 759 60 1,750ms 1 Oct 2025 712th SirBogman 🇺🇸 759 86 115ms 24 Jan 2021 712th strout 759 86 124ms 15 Dec 2023 714th antimon2 🇯🇵 758 65 470ms 19 Jan 2021 715th GolfingSuccess 🇬🇷 758 71 6ms 16 Oct 2023 715th Yewzir 🇧🇪 758 71 3ms 19 Nov 2025 717th duckyluuk 🇳🇱 756 73 8ms 16 Dec 2024 718th janbehrens 🇩🇪 756 93 464ms 24 Mar 2022 719th Shanethegamer 🇺🇸 754 63 4ms 13 Aug 2024 719th emgordon154 754 63 4ms 25 Aug 2024 First Prev 641–720 of 1,907 Next Last