Fibonacci in JavaScript 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 Gray Code Decoder Gray Code Encoder 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 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 Gray Code Decoder Gray Code Encoder 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 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 627th PlutonianHacker 623 53 10ms 9 Jul 2021 627th ereztaiar 🇮🇱 623 53 58ms 12 Aug 2021 627th lukaskairys 623 53 27ms 27 Sep 2021 627th Clonex 623 53 27ms 23 Nov 2021 627th janleigh 🇵🇭 623 53 9ms 31 May 2022 627th MiguelEXE 623 53 27ms 8 Jun 2022 627th PyPylia 🇦🇺 623 53 27ms 24 Sep 2022 627th mebens 623 53 26ms 17 Nov 2022 627th MCausc78 🇺🇦 623 53 9ms 29 Dec 2022 627th RasmusBV 623 53 27ms 19 Feb 2023 627th xnacly 🇩🇪 623 53 10ms 30 Jun 2023 627th RobertHoeh 623 53 27ms 9 Sep 2023 627th Sciman101 623 53 11ms 16 Nov 2023 627th yuigoto 623 53 31ms 25 Nov 2023 627th FISHARMNIC 623 53 27ms 15 Jan 2024 627th msbranicky 623 53 10ms 3 Jul 2024 627th tylerguy 623 53 10ms 1 Dec 2025 658th TravisBumgarner 611 54 28ms 31 Jan 2019 658th theDigg 611 54 56ms 21 Jun 2019 658th guptaniraj93 611 54 9ms 30 Jul 2019 658th sobhanbera 611 54 10ms 22 Jun 2020 658th the-north-dev 611 54 10ms 28 Aug 2020 658th ashleylamont 611 54 10ms 24 Nov 2020 658th ytaki0801 🇯🇵 611 54 9ms 19 Jun 2021 658th uiamn 611 54 57ms 6 Sep 2022 658th 104210 611 54 10ms 14 Sep 2022 658th LeftPathLane 611 54 10ms 1 Nov 2022 658th JesseNoEyes 🇺🇸 611 54 10ms 25 Sep 2024 658th goodwyna21 611 54 27ms 5 Nov 2024 658th n3uromanc3r 611 54 37ms 3 Dec 2024 671st obadiar-zz 600 55 31ms 7 Oct 2017 671st robertDurst 600 55 26ms 7 Oct 2017 671st DanSmelly 600 55 11ms 25 Jun 2020 671st brownie-in-motion 600 55 10ms 11 Jul 2020 671st pedromcsousa 🇵🇹 600 55 30ms 30 Nov 2020 671st lewdev 🇺🇸 600 55 29ms 26 Jul 2021 671st mckymsh 600 55 12ms 1 Mar 2022 671st Gravitonic 600 55 10ms 15 Dec 2022 671st IchBinMichMarkus 600 55 9ms 11 Jul 2023 671st weleho 600 55 10ms 18 Sep 2023 671st A11yship 600 55 9ms 2 Nov 2023 671st RockOfStone 600 55 10ms 23 Mar 2024 671st ErikGXDev 600 55 10ms 26 Oct 2024 671st 4very 600 55 36ms 9 Jun 2025 685th d4rkne55 589 56 10ms 2 Mar 2018 685th pbarath 589 56 10ms 13 Apr 2021 685th Ashikpaul 🇮🇳 589 56 25ms 9 May 2021 685th hpr 589 56 21ms 13 Jun 2021 685th E2dgar 589 56 10ms 30 Jan 2022 685th Simon3995 🇳🇱 589 56 12ms 10 Mar 2022 685th aneurin-h 589 56 11ms 22 Nov 2022 685th griffinschreiber 589 56 11ms 30 Oct 2024 685th MID246 589 56 11ms 14 Nov 2024 685th Laellekoenig 589 56 28ms 28 Oct 2025 695th jacobsmith 579 57 28ms 21 Jan 2019 695th phpboyscout 579 57 11ms 3 Sep 2019 695th jling90 579 57 57ms 16 Dec 2019 695th maximevredeveld 579 57 9ms 17 Jan 2021 695th kungozan 579 57 10ms 29 Mar 2021 695th benStre 579 57 23ms 19 Feb 2022 695th TheCod-r 🇦🇶 579 57 10ms 26 Feb 2023 695th blaircalderwood 579 57 10ms 25 Oct 2023 703rd rkichenama 569 58 26ms 26 Feb 2018 703rd sharabiania 569 58 27ms 27 Feb 2018 703rd davidbutt 569 58 10ms 26 Jul 2018 703rd visvirial 569 58 10ms 19 Dec 2018 703rd tadeokondrak 569 58 40ms 27 Apr 2019 703rd vladyslavprosolupov 569 58 33ms 30 May 2019 703rd Koljenka 569 58 28ms 15 Dec 2019 703rd lilyyy411 569 58 9ms 10 Sep 2021 703rd JayantaNath 569 58 9ms 17 Sep 2021 703rd AndresCardonaDev 569 58 11ms 7 Nov 2021 703rd ThibWillFulll 569 58 50ms 5 May 2022 703rd cingulataluke 569 58 10ms 21 Oct 2022 703rd ptforness 569 58 9ms 31 Dec 2022 703rd infostreams 569 58 13ms 11 Jul 2023 703rd 0vidiu 569 58 10ms 13 Dec 2023 718th verticall 559 59 10ms 28 Jul 2019 718th atsheridan 559 59 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