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 715th 123mjb 559 59 10ms 25 Jun 2025 722nd Moritz-Siegel 550 60 11ms 11 Jan 2018 722nd SamirHodzic 550 60 10ms 12 Oct 2018 722nd MaartenStaa 550 60 29ms 5 Jan 2020 722nd ze-h 🇺🇸 550 60 9ms 10 Jan 2022 722nd MattShaile 550 60 10ms 20 Mar 2022 722nd Cinnamonsroll 550 60 10ms 18 Oct 2022 722nd MisterrLuck 550 60 11ms 31 Jul 2024 722nd noahhorlacher 550 60 9ms 8 Dec 2024 730th rxl3 541 61 26ms 15 Mar 2018 730th wrauner 541 61 9ms 6 Aug 2019 730th PeriBooty 541 61 28ms 26 Nov 2019 730th tekaireb 541 61 20ms 24 Jul 2021 730th mackereldev 541 61 11ms 27 Apr 2022 730th Smetalo 541 61 10ms 24 Aug 2022 730th DCerane 541 61 27ms 14 Oct 2022 730th mobibluman 541 61 10ms 23 Oct 2023 738th N3phi1im 532 62 10ms 22 Nov 2018 738th janga1 532 62 9ms 19 Aug 2021 738th charlieharutaka 532 62 10ms 28 Sep 2021 738th Gpopcorn 532 62 10ms 29 Mar 2022 738th programmeruser2 532 62 10ms 3 Mar 2023 738th ANovelForStudy 532 62 10ms 9 Jun 2023 738th deniz-blue 532 62 10ms 19 Oct 2023 738th TotoAJ 532 62 10ms 12 Dec 2023 746th ahmedzafar89 524 63 9ms 13 Sep 2018 746th McErer 524 63 10ms 11 Jan 2019 746th blucky36 524 63 27ms 27 Feb 2019 746th Jdender 524 63 39ms 21 Aug 2019 746th DaCoolOne 524 63 10ms 24 Nov 2019 746th grenierdev 524 63 10ms 3 Dec 2019 746th saschakaupp 524 63 9ms 5 Dec 2019 746th Randomness74 524 63 10ms 14 Mar 2020 746th heigertd 524 63 12ms 26 May 2020 746th Fulkman 524 63 11ms 19 Sep 2020 746th Fanrco 524 63 11ms 31 Aug 2023 746th null-tangent 524 63 25ms 3 Apr 2025 758th DmyBor 516 64 9ms 4 May 2018 758th ollybrabs 516 64 20ms 22 Aug 2018 758th Kingohearts 516 64 11ms 22 Sep 2018 758th sammylou852 516 64 9ms 30 Nov 2018 758th jonot-cyber 516 64 10ms 16 Jun 2019 758th Pablo-No 516 64 11ms 15 Jul 2020 758th richard-oelze 🇩🇪 516 64 10ms 6 Nov 2020 758th WilliamKeating 516 64 9ms 14 Jan 2022 758th OfficialCB 516 64 12ms 11 Dec 2023 758th Mikey-Beep 🇬🇧 516 64 9ms 25 Dec 2024 768th varbrad 508 65 10ms 5 Dec 2017 768th masashimachida 508 65 10ms 27 Jul 2020 768th kozgera 508 65 10ms 9 Apr 2021 768th kellyGipson 508 65 11ms 2 Jun 2021 768th Ivraj 508 65 27ms 11 Dec 2022 768th osNiko 🇧🇷 508 65 10ms 14 days ago 774th Draegert 500 66 21ms 4 Jun 2019 774th con-cs 500 66 11ms 26 Oct 2021 774th RegularSalamander 500 66 37ms 29 Jan 2022 774th Zylar-xD 500 66 10ms 1 Apr 2022 774th Lxkasmehl 500 66 10ms 17 Jul 2025 774th Xanderium 500 66 9ms 29 Aug 2025 780th labster 493 67 21ms 5 Mar 2018 780th aberthier 493 67 28ms 6 Mar 2018 780th GustavSt 493 67 12ms 4 Mar 2020 780th mattduag 493 67 10ms 20 Dec 2022 780th henrygagnier 493 67 9ms 19 Nov 2024 785th ChuaJ 485 68 9ms 25 Apr 2019 785th EfiGordon 485 68 10ms 24 Jul 2020 785th aphrim 🇺🇸 485 68 10ms 30 Oct 2021 785th pfysches-boop 485 68 10ms 6 Aug 2023 789th cooldreamer 478 69 11ms 20 Aug 2019 789th gabsumm 478 69 10ms 12 Jan 2022 791st everchanger 471 70 10ms 6 Jun 2020 791st tik25 471 70 10ms 28 Mar 2024 793rd abishek28007 465 71 10ms 7 Sep 2020 793rd k4rli 465 71 10ms 20 Jan 2021 793rd jessegyger 465 71 11ms 7 Nov 2022 793rd Pyro569 465 71 10ms 30 Jul 2023 793rd apokryfos 465 71 25ms 18 Aug 2023 798th rishavb123 458 72 9ms 19 Jul 2018 798th DaleNaci 458 72 12ms 19 Jul 2018 798th Cr3aHal0 458 72 10ms 14 Jun 2019 First Prev 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