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 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 Chars Time Submitted 480th Bubbler-4 848 89 118ms 1 Jul 2021 482nd snoozingnewt 🇨🇦 847 44 98ms 26 days ago 483rd jared-hughes 847 55 10ms 31 Jul 2022 483rd emgordon154 847 55 9ms 4 Mar 2025 485th ovs-code 🇩🇪 847 81 458ms 15 Jun 2024 486th jared-hughes 847 84 57ms 31 Jul 2022 487th GrayJoKing 🇦🇺 847 91 7ms 13 days ago 488th emgordon154 847 131 1,613ms 29 Nov 2024 489th Shanethegamer 🇺🇸 845 77 81ms 9 Jun 2022 490th dokutan 843 47 4ms 18 Jul 2025 491st Shanethegamer 🇺🇸 843 50 38ms 22 Mar 2023 491st MeWhenI 🇻🇦 843 50 37ms 22 Mar 2023 493rd MeWhenI 🇻🇦 843 57 458ms 17 Jan 2024 493rd SirBogman 🇺🇸 843 57 423ms 10 Jun 2024 493rd CaedenHarper 🇨🇦 843 57 381ms 9 Dec 2025 496th Steffan153 🇫🇮 843 63 2ms 23 Mar 2023 496th stefangimmillaro 843 63 2ms 18 Sep 2023 496th xsot 🇸🇬 843 63 2ms 6 May 2025 496th KasperKivimaeki 🇫🇮 843 63 2ms 14 Aug 2025 500th MeWhenI 🇻🇦 842 76 37ms 16 Jun 2022 501st btnlq 841 43 252ms 26 Jan 2021 501st primo-ppcg 🇹🇭 841 43 256ms 25 May 2021 503rd primo-ppcg 🇹🇭 841 87 29ms 25 Jan 2023 504th DialFrost 🇸🇬 841 132 1,650ms 17 Jan 2026 505th fuzzylojik-golf 🇺🇸 840 22 3ms 6 Sep 2025 506th acotis 839 90 148ms 3 Oct 2025 507th primo-ppcg 🇹🇭 837 85 53ms 18 Jan 2022 507th 09cf 837 85 57ms 24 Sep 2023 509th marcin7Cd 835 59 10ms 16 Jan 2021 509th AlephSquirrel 835 59 11ms 13 May 2021 509th rschwa6308 🇺🇸 835 59 10ms 28 Jun 2021 509th NewDefectus 🇮🇱 835 59 12ms 25 Oct 2021 509th jacksonhenry3 835 59 13ms 21 Dec 2021 509th NicoAdams 835 59 12ms 21 Dec 2021 509th yzhs 🇩🇪 835 59 12ms 7 Jun 2022 509th aksyristos 835 59 10ms 28 Feb 2023 509th BREMAUCY 🇫🇷 835 59 11ms 27 Apr 2023 509th MarcMush 🇫🇷 835 59 10ms 12 Feb 2024 509th CommandLeo 🇮🇹 835 59 11ms 18 Jan 2026 509th pengu1n-master 835 59 11ms 24 days ago 521st GrayJoKing 🇦🇺 833 57 36ms 5 Sep 2024 522nd MeWhenI 🇻🇦 832 56 10ms 8 Jun 2022 522nd Yewzir 🇧🇪 832 56 9ms 16 Nov 2023 522nd voytxt 🇨🇿 832 56 9ms 25 Jan 2025 522nd targrik 832 56 9ms 21 Feb 2025 526th sean-niemann 🇺🇸 832 77 41ms 18 Dec 2023 527th kritixilithos 831 58 3ms 29 May 2024 528th primo-ppcg 🇹🇭 831 77 1,449ms 30 Nov 2021 529th inventshah 830 64 2ms 17 Nov 2022 529th DialFrost 🇸🇬 830 64 2ms 7 Nov 2025 531st sisyphus-ppcg 🇦🇺 829 60 104ms 25 Feb 2021 532nd Kacarott 🇦🇺 828 58 403ms 15 Jan 2024 532nd Natanaelel 🇸🇪 828 58 445ms 20 Jan 2024 532nd AlephSquirrel 828 58 467ms 21 Jan 2024 532nd namelessiw 828 58 402ms 15 Aug 2024 536th Irratix 🇳🇱 827 51 36ms 4 Mar 2022 537th GrayJoKing 🇦🇺 827 65 4ms 9 Nov 2023 538th Yewzir 🇧🇪 826 83 486ms 16 Nov 2023 539th MeWhenI 🇻🇦 825 104 278ms 8 Feb 2023 540th MeWhenI 🇻🇦 824 78 111ms 14 Oct 2022 541st Shanethegamer 🇺🇸 823 83 82ms 19 Apr 2022 542nd GrayJoKing 🇦🇺 822 81 120ms 14 Mar 2022 542nd MeWhenI 🇻🇦 822 81 125ms 15 Nov 2022 544th AGoyet 821 60 13ms 29 Jun 2022 544th betaveros 821 60 20ms 31 Dec 2022 544th AlexanderFair 821 60 11ms 23 Jun 2023 544th Andriamanitra 🇫🇮 821 60 14ms 20 Jul 2023 544th dranjohn 821 60 47ms 15 Sep 2023 544th inverseLorentz 🇦🇺 821 60 11ms 9 Apr 2024 544th 051 🇸🇬 821 60 11ms 1 Aug 2024 544th vgamula 🇺🇦 821 60 33ms 28 Jul 2025 544th LuisGoncalves05 🇵🇹 821 60 11ms 29 Jul 2025 544th luuumine 🇫🇷 821 60 11ms 20 Oct 2025 544th solisolu 821 60 11ms 1 Jan 2026 555th emgordon154 821 105 119ms 4 Dec 2025 556th NewDefectus 🇮🇱 818 57 10ms 1 Nov 2021 557th prplz 🇦🇺 818 65 2ms 24 Jan 2021 557th sisyphus-ppcg 🇦🇺 818 65 2ms 25 Jan 2021 557th 09cf 818 65 2ms 24 Sep 2023 560th inventshah 817 59 2ms 18 May 2022 First Prev 481–560 of 1,907 Next Last