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 718th CataMates 559 59 10ms 2 Nov 2020 718th omarpr 559 59 10ms 12 Apr 2021 718th 2pichar 559 59 10ms 10 Nov 2022 718th 123mjb 559 59 10ms 25 Jun 2025 725th Moritz-Siegel 550 60 11ms 11 Jan 2018 725th SamirHodzic 550 60 10ms 12 Oct 2018 725th MaartenStaa 550 60 26ms 5 Jan 2020 725th ze-h 🇺🇸 550 60 10ms 10 Jan 2022 725th MattShaile 550 60 10ms 20 Mar 2022 725th Cinnamonsroll 550 60 10ms 18 Oct 2022 725th MisterrLuck 550 60 12ms 31 Jul 2024 725th noahhorlacher 550 60 10ms 8 Dec 2024 733rd rxl3 541 61 27ms 15 Mar 2018 733rd wrauner 541 61 10ms 6 Aug 2019 733rd PeriBooty 541 61 28ms 26 Nov 2019 733rd tekaireb 541 61 20ms 24 Jul 2021 733rd mackereldev 541 61 9ms 27 Apr 2022 733rd Smetalo 541 61 13ms 24 Aug 2022 733rd DCerane 541 61 26ms 14 Oct 2022 733rd mobibluman 541 61 12ms 23 Oct 2023 741st N3phi1im 532 62 9ms 22 Nov 2018 741st janga1 532 62 9ms 19 Aug 2021 741st charlieharutaka 532 62 9ms 28 Sep 2021 741st Gpopcorn 532 62 9ms 29 Mar 2022 741st programmeruser2 532 62 9ms 3 Mar 2023 741st ANovelForStudy 532 62 10ms 9 Jun 2023 741st deniz-blue 532 62 9ms 19 Oct 2023 741st TotoAJ 532 62 11ms 12 Dec 2023 749th ahmedzafar89 524 63 10ms 13 Sep 2018 749th McErer 524 63 10ms 11 Jan 2019 749th blucky36 524 63 30ms 27 Feb 2019 749th Jdender 524 63 50ms 21 Aug 2019 749th DaCoolOne 524 63 13ms 24 Nov 2019 749th grenierdev 524 63 9ms 3 Dec 2019 749th saschakaupp 524 63 11ms 5 Dec 2019 749th Randomness74 524 63 10ms 14 Mar 2020 749th heigertd 524 63 9ms 26 May 2020 749th Fulkman 524 63 10ms 19 Sep 2020 749th Fanrco 524 63 10ms 31 Aug 2023 749th null-tangent 524 63 27ms 3 Apr 2025 761st DmyBor 516 64 10ms 4 May 2018 761st ollybrabs 516 64 20ms 22 Aug 2018 761st Kingohearts 516 64 11ms 22 Sep 2018 761st sammylou852 516 64 9ms 30 Nov 2018 761st jonot-cyber 516 64 12ms 16 Jun 2019 761st Pablo-No 516 64 10ms 15 Jul 2020 761st richard-oelze 🇩🇪 516 64 10ms 6 Nov 2020 761st WilliamKeating 516 64 9ms 14 Jan 2022 761st OfficialCB 516 64 13ms 11 Dec 2023 761st Mikey-Beep 🇬🇧 516 64 11ms 25 Dec 2024 771st varbrad 508 65 10ms 5 Dec 2017 771st masashimachida 508 65 10ms 27 Jul 2020 771st kozgera 508 65 10ms 9 Apr 2021 771st kellyGipson 508 65 11ms 2 Jun 2021 771st Ivraj 508 65 27ms 11 Dec 2022 771st osNiko 🇧🇷 508 65 10ms 20 days ago 777th Draegert 500 66 19ms 4 Jun 2019 777th con-cs 500 66 10ms 26 Oct 2021 777th RegularSalamander 500 66 43ms 29 Jan 2022 777th Zylar-xD 500 66 10ms 1 Apr 2022 777th Lxkasmehl 500 66 10ms 17 Jul 2025 782nd labster 493 67 24ms 5 Mar 2018 782nd aberthier 493 67 28ms 6 Mar 2018 782nd GustavSt 493 67 10ms 4 Mar 2020 782nd mattduag 493 67 10ms 20 Dec 2022 782nd henrygagnier 493 67 9ms 19 Nov 2024 787th ChuaJ 485 68 10ms 25 Apr 2019 787th EfiGordon 485 68 11ms 24 Jul 2020 787th aphrim 🇺🇸 485 68 11ms 30 Oct 2021 787th pfysches-boop 485 68 11ms 6 Aug 2023 791st cooldreamer 478 69 10ms 20 Aug 2019 791st gabsumm 478 69 9ms 12 Jan 2022 793rd everchanger 471 70 9ms 6 Jun 2020 793rd tik25 471 70 9ms 28 Mar 2024 795th abishek28007 465 71 10ms 7 Sep 2020 795th k4rli 465 71 10ms 20 Jan 2021 795th jessegyger 465 71 10ms 7 Nov 2022 795th Pyro569 465 71 10ms 30 Jul 2023 795th apokryfos 465 71 27ms 18 Aug 2023 800th rishavb123 458 72 10ms 19 Jul 2018 First 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