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 901st nephila-nacrea 🇬🇧 640 58 4ms 3 Feb 2021 902nd f-tucker 640 77 10ms 2 Feb 2024 902nd undefinedRyan 640 77 11ms 19 Apr 2025 902nd Emutis 🇱🇹 640 77 10ms 12 Sep 2025 905th alomiF 640 102 139ms 4 Nov 2024 906th Maznek 638 73 9ms 30 Jun 2023 907th MeWhenI 🇻🇦 637 82 10ms 21 Jul 2023 908th janbehrens 🇩🇪 636 135 265ms 13 Jun 2021 909th Shanethegamer 🇺🇸 635 57 213ms 27 Jul 2023 910th MateuszPietrzak 🇵🇱 635 112 53ms 16 Jan 2024 911th sreyfe 635 119 166ms 9 Jun 2024 912th DialFrost 🇸🇬 633 67 129ms 3 Aug 2024 913th dokutan 633 94 346ms 18 Jul 2025 914th AkashTandon167 632 78 10ms 25 May 2021 914th jhpaques 🇫🇷 632 78 21ms 30 Nov 2022 916th SirBogman 🇺🇸 632 84 2ms 14 Dec 2021 917th MeWhenI 🇻🇦 632 90 2,869ms 24 Oct 2024 918th emgordon154 632 186 478ms 30 May 2025 919th NewDefectus 🇮🇱 630 59 10ms 25 Oct 2021 920th janbehrens 🇩🇪 629 136 27ms 9 Jul 2021 921st Shanethegamer 🇺🇸 624 64 2ms 26 Jul 2023 922nd twocatsinatrenchcoat 624 79 9ms 29 Mar 2022 922nd SniperSmiley 🇺🇸 624 79 36ms 23 Jun 2022 922nd Glinte 624 79 16ms 14 Dec 2023 922nd Bmrl7 624 79 14ms 19 Mar 2024 926th CaedenHarper 🇨🇦 624 107 357ms 6 Oct 2025 927th MeWhenI 🇻🇦 622 101 12ms 9 May 2024 928th edsrzf 🇳🇿 622 138 268ms 21 Dec 2024 929th emgordon154 622 151 8ms 6 Oct 2024 930th janbehrens 🇩🇪 620 68 42ms 18 Jan 2021 931st ovs-code 🇩🇪 619 48 141ms 2 Jan 2024 932nd Yewzir 🇧🇪 619 64 4ms 16 Nov 2023 933rd MeWhenI 🇻🇦 619 106 350ms 26 Aug 2023 934th dokutan 618 106 12ms 24 Mar 2025 935th AkashTandon167 617 86 2ms 25 May 2021 936th bastienvoirin 🇫🇷 616 80 14ms 4 Feb 2021 936th argusdusty 🇺🇸 616 80 18ms 25 Mar 2021 936th OppositeShark 616 80 11ms 9 Apr 2022 936th WillowWispy 616 80 9ms 16 Mar 2025 940th Shanethegamer 🇺🇸 614 85 4ms 21 Dec 2024 941st codename68 614 123 141ms 13 Aug 2022 942nd orthoplex 🇨🇽 613 153 18ms 25 Jun 2023 943rd Shanethegamer 🇺🇸 612 192 473ms 2 Apr 2025 944th ashtraypettingzoo 🇺🇸 611 36 35ms 23 Feb 2023 945th omurakazuaki 🇯🇵 611 69 41ms 19 Feb 2021 946th Shanethegamer 🇺🇸 610 65 6ms 2 Aug 2022 947th Herbert00709 🇵🇱 610 87 2ms 19 Nov 2024 948th JRaspass 🇬🇧 609 61 3ms 5 Sep 2021 949th vodker1 608 81 10ms 9 Mar 2022 949th tooningelaere 608 81 9ms 5 Dec 2022 951st primo-ppcg 🇹🇭 607 110 295ms 2 Aug 2021 951st Lydxn 🇨🇦 607 110 297ms 28 Feb 2022 953rd AbhayAravinda 605 77 9ms 1 May 2021 954th KevinMarquette 🇺🇸 603 60 226ms 21 Oct 2021 955th Natanaelel 🇸🇪 603 88 2ms 9 May 2024 956th snoozingnewt 🇺🇸 602 70 45ms 10 Oct 2025 957th ovs-code 🇩🇪 602 80 848ms 5 May 2023 958th janbehrens 🇩🇪 602 111 304ms 21 Oct 2021 958th Irratix 🇳🇱 602 111 316ms 18 Dec 2022 958th Steffan153 🇫🇮 602 111 304ms 10 Feb 2023 961st fynnkroeger 601 82 10ms 24 Mar 2021 961st BrenSchaap 601 82 11ms 21 Oct 2021 961st MichaelMBradley 🇨🇦 601 82 9ms 18 Feb 2022 964th MeWhenI 🇻🇦 600 66 5ms 29 May 2023 965th Shanethegamer 🇺🇸 599 62 4ms 8 Dec 2021 966th Mabeloid 🇳🇴 599 126 145ms 26 Oct 2025 967th MeWhenI 🇻🇦 598 71 132ms 3 Aug 2024 968th GrayJoKing 🇦🇺 598 172 3ms 18 Jan 2021 969th BBoehm 🇩🇪 597 78 9ms 26 Jan 2021 969th KatieLG 🇬🇧 597 78 9ms 16 Apr 2021 971st prplz 🇦🇺 596 112 304ms 1 Jun 2021 972nd KatieLG 🇬🇧 595 77 235ms 2 Oct 2022 973rd Brianzhengca 594 83 11ms 1 Feb 2021 973rd hymanimy 594 83 11ms 24 Aug 2021 973rd nullie 594 83 11ms 9 Jun 2022 First Prev 901–975 of 1,858 Next Last