Fibonacci in JavaScript 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 551st delgoodie 688 48 10ms 19 Oct 2021 551st CutOffFrequency 688 48 9ms 31 Oct 2022 551st Weston49 688 48 9ms 11 Dec 2022 551st Baxi-codes 688 48 9ms 25 Dec 2022 551st fkantelberg 688 48 10ms 15 Jul 2023 551st Posandu 688 48 9ms 23 Sep 2023 551st azure-blondon 688 48 9ms 15 Jul 2024 551st abhishekg999 688 48 10ms 21 Sep 2024 551st gigaprofisi 🇺🇸 688 48 9ms 5 Nov 2025 570th ArturLange 673 49 10ms 31 Aug 2018 570th felixpackard 673 49 10ms 16 Mar 2020 570th hvanderdys 673 49 9ms 10 Sep 2020 570th stadamdoki 673 49 9ms 12 Apr 2021 570th cubedhuang 673 49 9ms 23 Mar 2022 570th cmoedk 673 49 9ms 5 Nov 2022 570th Florian-Mt 673 49 9ms 20 Nov 2023 570th SrGalletaEXT 673 49 9ms 22 Jul 2024 570th xShadowBlade 673 49 9ms 24 Nov 2024 570th Charlie85270 673 49 10ms 25 Jun 2025 580th petewritescode 660 50 9ms 14 Dec 2018 580th rzhade3 660 50 11ms 22 May 2020 580th taimanh229 660 50 10ms 31 Dec 2020 580th MichalMarsalek 🇨🇿 660 50 12ms 29 Nov 2021 580th fitzdotlol 🇺🇸 660 50 10ms 18 Feb 2022 580th Bonjour27891 🇻🇳 660 50 9ms 12 Mar 2022 580th jlivas 660 50 10ms 1 Jul 2022 580th tse-jp 🇯🇵 660 50 9ms 30 Nov 2022 580th tuxillator 660 50 9ms 15 Dec 2022 580th lucipas 660 50 9ms 8 May 2024 580th Vexxter9 🇳🇱 660 50 9ms 20 Sep 2024 580th allistersascha 660 50 9ms 11 Oct 2024 580th Dddatt 660 50 11ms 9 Jan 2025 580th Zach1031 660 50 9ms 15 Nov 2025 580th Pyroan 660 50 9ms 17 Dec 2025 595th genius257 647 51 10ms 23 Mar 2018 595th stanley-c-so 647 51 9ms 4 Oct 2019 595th Jumprocks1 647 51 10ms 11 Feb 2020 595th jn-lp 🇺🇦 647 51 10ms 31 Oct 2020 595th RedstoneTim 647 51 10ms 26 Jun 2021 595th aksyristos 647 51 12ms 27 Oct 2022 595th rdscott-vrsk 647 51 9ms 12 May 2023 595th Ralac07 🇦🇺 647 51 10ms 18 Apr 2025 603rd bobesa 635 52 27ms 16 Oct 2017 603rd xen-the 635 52 11ms 10 Oct 2018 603rd Caylyn 635 52 10ms 22 Dec 2018 603rd joeytwiddle 635 52 56ms 4 Feb 2019 603rd phillygogo 635 52 9ms 5 Jun 2019 603rd wouterraateland 635 52 9ms 8 Jul 2019 603rd pg98 635 52 9ms 4 Sep 2019 603rd paavohuhtala 635 52 29ms 4 Jan 2020 603rd jankaifer 635 52 28ms 8 Aug 2020 603rd lowlighter 635 52 26ms 30 Oct 2020 603rd 102 635 52 9ms 18 Nov 2020 603rd arrudagates 635 52 26ms 23 Jun 2021 603rd teofum 635 52 26ms 8 Mar 2022 603rd mamamia5x 635 52 35ms 8 Mar 2024 603rd junkondo-jp 635 52 58ms 6 May 2024 603rd Sinescape 635 52 10ms 16 Sep 2024 603rd shandriy 635 52 26ms 23 Jan 2026 620th johnennewdeeson 623 53 9ms 16 Oct 2017 620th someone12346 623 53 27ms 1 Apr 2018 620th gunnermanx 623 53 9ms 4 Jan 2019 620th frankviktorfrank 623 53 10ms 26 Mar 2019 620th gjbianco 623 53 26ms 27 May 2019 620th dzablo 623 53 25ms 4 Sep 2019 620th adoxography 623 53 26ms 16 Sep 2019 620th quentincaffeino 623 53 30ms 4 Jun 2020 620th jchitel 623 53 26ms 24 Sep 2020 620th ffflorian 623 53 27ms 23 Nov 2020 620th IAmYhvr 623 53 26ms 6 Feb 2021 620th gnlow 🇰🇷 623 53 40ms 15 Feb 2021 620th ForkKILLET 🇨🇳 623 53 26ms 18 Feb 2021 620th PGPereira 623 53 25ms 27 Mar 2021 620th PlutonianHacker 623 53 9ms 9 Jul 2021 620th ereztaiar 🇮🇱 623 53 56ms 12 Aug 2021 620th lukaskairys 623 53 26ms 27 Sep 2021 620th Clonex 623 53 26ms 23 Nov 2021 620th janleigh 🇵🇭 623 53 10ms 31 May 2022 620th MiguelEXE 623 53 26ms 8 Jun 2022 620th PyPylia 🇦🇺 623 53 25ms 24 Sep 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