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 Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 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 ArkScript 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 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 Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 801st scpchicken 🇵🇼 719 51 165ms 18 Jan 2023 802nd Yewzir 🇧🇪 719 91 2ms 28 Mar 2024 803rd osmith93 718 70 25ms 14 Jun 2021 803rd ridingqwerty 🇺🇸 718 70 12ms 23 Feb 2024 803rd mbittner20 718 70 11ms 15 Jul 2024 803rd luuumine 🇫🇷 718 70 11ms 20 Oct 2025 807th igmcdowell 717 65 11ms 23 Nov 2021 808th msbranicky 717 67 496ms 17 Jan 2024 809th MeWhenI 🇻🇦 717 75 9ms 9 Oct 2023 810th prplz 🇦🇺 717 91 118ms 25 Jan 2021 811th marshallward 🇺🇸 716 100 41ms 7 May 2025 812th NewDefectus 🇮🇱 715 32 34ms 20 Dec 2021 813th NewDefectus 🇮🇱 714 21 2ms 14 Jan 2022 814th prplz 🇦🇺 714 52 3ms 5 Feb 2021 815th MarcMush 🇫🇷 714 69 304ms 12 Feb 2024 816th Herbert00709 🇵🇱 713 101 60ms 19 Nov 2024 817th emgordon154 712 80 2,629ms 9 Aug 2025 818th targrik 712 123 305ms 10 Jul 2025 819th NewDefectus 🇮🇱 711 76 2ms 25 Oct 2021 819th JohandeRuiter 🇳🇱 711 76 2ms 3 Dec 2023 821st MeWhenI 🇻🇦 711 90 1,365ms 14 Jun 2023 822nd chordowl 710 92 116ms 17 Mar 2021 823rd marcin7Cd 710 103 21ms 12 Feb 2021 824th Feniske 🇫🇷 709 51 272ms 21 Nov 2023 825th aadenboy 🇺🇸 709 86 2ms 16 Dec 2025 826th SnowballSH 708 71 11ms 12 Feb 2021 826th Andre3582 708 71 11ms 18 Mar 2021 826th PhysicDev 🇫🇷 708 71 10ms 20 May 2021 826th Alban-Boissard 708 71 12ms 10 Jun 2025 830th omurakazuaki 🇯🇵 706 66 11ms 18 Feb 2021 830th BambooleanLogic 🇸🇪 706 66 9ms 22 Aug 2022 830th coreynash 706 66 10ms 21 Oct 2023 830th two-bad 🇬🇧 706 66 9ms 24 Nov 2023 830th dylanarmstrong 706 66 10ms 15 Jan 2024 830th madeforlosers 706 66 9ms 5 Nov 2025 836th Stockoh 🇫🇷 706 68 427ms 24 Jun 2024 837th typeswitch-dev 🇵🇹 705 74 8ms 7 Aug 2023 838th msbranicky 704 65 1,289ms 12 Sep 2023 839th Shanethegamer 🇺🇸 704 91 39ms 16 Jun 2022 840th SnowballSH 703 60 36ms 12 Feb 2021 840th aksyristos 703 60 37ms 28 Feb 2023 840th Lv0Sys 🇵🇱 703 60 40ms 4 Dec 2025 843rd primo-ppcg 🇹🇭 702 47 1,032ms 5 Feb 2022 844th MeWhenI 🇻🇦 702 238 12ms 29 Aug 2023 845th MeWhenI 🇻🇦 701 35 51ms 26 Jul 2022 845th jared-hughes 701 35 48ms 31 Jul 2022 845th Natanaelel 🇸🇪 701 35 50ms 18 Aug 2022 848th KasperKivimaeki 🇫🇮 701 125 288ms 3 Oct 2025 849th JayXon 🇺🇸 700 40 46ms 2 Jun 2021 850th UnderKoen 🇳🇱 700 134 13ms 20 Jan 2025 851st jared-hughes 699 44 6ms 31 Jul 2022 852nd Shanethegamer 🇺🇸 699 77 13ms 9 Oct 2023 853rd JGDoerrer 699 103 443ms 5 Jan 2022 853rd tailorspy 699 103 63ms 29 Oct 2023 855th LeeCamp 698 72 10ms 16 Feb 2022 855th LukasFolwarczny 🇨🇿 698 72 10ms 16 Sep 2022 855th CutSandstone 698 72 38ms 8 Jul 2024 858th jared-hughes 698 159 1,670ms 16 Sep 2025 859th targrik 696 57 6ms 26 Aug 2025 860th neihousaigaai 696 67 10ms 10 Apr 2021 861st boxjelly 694 94 114ms 21 Jan 2021 861st YAJUE114514 694 94 133ms 24 Jul 2025 863rd dokutan 693 99 372ms 24 Sep 2025 864th Espiobest 692 61 34ms 13 Feb 2021 864th DaCuteRaccoon 692 61 42ms 9 Dec 2022 866th MeWhenI 🇻🇦 691 106 345ms 26 Aug 2023 867th Shanethegamer 🇺🇸 690 106 17ms 4 Oct 2024 868th msbranicky 689 95 5ms 11 Aug 2023 869th GolfingSuccess 🇬🇷 688 69 33ms 17 Aug 2024 870th richard-oelze 🇩🇪 688 73 30ms 4 Apr 2021 870th mauro-1 🇮🇹 688 73 9ms 18 Aug 2021 870th gchenfc 688 73 9ms 24 Jan 2022 870th hiichbindermax 688 73 11ms 26 Feb 2022 870th Omega65536 🇩🇪 688 73 11ms 24 Nov 2022 870th sandorstormen 688 73 11ms 18 Feb 2023 870th Mr-McChicken 688 73 10ms 15 Oct 2023 870th Masttest 688 73 10ms 21 Feb 2024 878th Andriamanitra 🇫🇮 687 95 148ms 20 Jul 2023 879th MeWhenI 🇻🇦 685 72 312ms 15 Feb 2023 879th Yewzir 🇧🇪 685 72 398ms 5 Apr 2024 First Prev 801–880 of 1,939 Next Last