Fibonacci in C 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 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 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 Multitap Input 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 ><> 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 ArkScript 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 ArkScript 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 Calendar 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 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 Multitap Input 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 Bytes Time Submitted 231st Szum123321 🇵🇱 868 53 1ms 25 Nov 2023 231st funnyboy-roks 868 53 2ms 14 Jun 2024 231st Mychecksdead 868 53 2ms 25 Jul 2024 231st NickTheEASDude 🇺🇸 868 53 2ms 29 Aug 2024 231st snyderek 🇺🇸 868 53 2ms 20 Jan 2025 231st ReterikHub 868 53 2ms 24 Apr 2025 231st camren-m 868 53 1ms 23 May 2025 231st arvidjonasson 868 53 2ms 7 Jun 2025 231st VeryHolyCheeeese 🇫🇮 868 53 2ms 25 Jun 2025 231st trinityy-7 868 53 2ms 7 Aug 2025 251st redstarrer 852 54 1ms 12 Jan 2021 251st rqberry 852 54 1ms 8 Mar 2023 251st kyokucyou 🇩🇪 852 54 1ms 13 Mar 2023 251st nishantc1527 852 54 1ms 5 Apr 2023 251st Garklein 🇨🇦 852 54 1ms 23 Oct 2023 251st Stockoh 🇫🇷 852 54 2ms 4 Nov 2024 251st heanyang1 852 54 1ms 22 Apr 2025 251st myirci 852 54 2ms 15 Jun 2025 251st blaztoma 🇱🇹 852 54 1ms 17 Aug 2025 251st Apataras 852 54 2ms 2 Sep 2025 261st rambox11 836 55 2ms 12 Mar 2019 261st AkashTandon167 836 55 1ms 25 Sep 2019 261st AasiApina 836 55 1ms 28 Jan 2020 261st minarjos 836 55 2ms 12 Jan 2021 261st rak1507 🇬🇧 836 55 1ms 1 Feb 2021 261st boxjelly 836 55 2ms 15 Feb 2021 261st ktiy 836 55 1ms 19 Apr 2021 261st starxingchenc 836 55 1ms 3 Jul 2021 261st blasio99 836 55 1ms 2 Nov 2021 261st rick-gnous 836 55 1ms 5 Nov 2021 261st LorenzoDeGaspari 836 55 2ms 20 Jun 2022 261st AnnoyedArt1256 836 55 1ms 19 Aug 2022 261st ndren 836 55 1ms 6 Aug 2023 261st triedel42 836 55 1ms 15 May 2024 261st LHLaurini 🇧🇷 836 55 1ms 30 Jun 2024 261st Mabeloid 🇳🇴 836 55 2ms 23 Oct 2025 277th alexjlaberge 821 56 1ms 8 Mar 2019 277th serenac26 821 56 1ms 2 May 2019 277th shuding 821 56 1ms 12 May 2020 277th ytaki0801 🇯🇵 821 56 1ms 19 Jun 2021 277th jgbaldwinbrown 821 56 1ms 2 Jul 2021 277th ACMichels 821 56 1ms 13 Aug 2021 277th LordAzyks 🇫🇷 821 56 1ms 30 Jun 2022 277th MCausc78 🇺🇦 821 56 1ms 5 Jan 2023 277th aevykt 821 56 1ms 29 Oct 2023 277th DevinJFarmer 821 56 1ms 29 Oct 2023 277th ashtraypettingzoo 🇺🇸 821 56 1ms 19 Mar 2024 277th 2022dyx 821 56 2ms 19 Jul 2024 277th madeforlosers 821 56 2ms 22 Nov 2024 277th desecaw13 821 56 2ms 24 Jan 2025 277th Emutis 🇱🇹 821 56 2ms 16 Aug 2025 277th ApoChagi 821 56 1ms 21 Oct 2025 277th deglebe 821 56 2ms 3 Nov 2025 294th ahenningsen 807 57 1ms 5 May 2019 294th ieeemma 807 57 2ms 30 Apr 2020 294th agrukuki 807 57 1ms 20 Sep 2020 294th ngocbd 🇻🇳 807 57 1ms 25 Sep 2020 294th iznax 807 57 1ms 16 Oct 2020 294th b-paul 807 57 1ms 25 Dec 2020 294th TheHammerBro 807 57 1ms 30 Apr 2021 294th shibacho 🇯🇵 807 57 1ms 18 Mar 2022 294th AndreaNeti 807 57 3ms 16 Jun 2022 294th menezesd 807 57 2ms 1 Dec 2022 294th Ripick 807 57 1ms 30 Apr 2023 294th imma-Spring 807 57 1ms 2 Nov 2023 294th rsgray 807 57 2ms 29 Dec 2023 294th loganmacdougall 🇨🇦 807 57 1ms 19 Jan 2024 294th jbjd 807 57 1ms 24 Feb 2024 294th Jigglypuffed 807 57 1ms 15 Jul 2025 294th KAKISKA-code 🇫🇮 807 57 1ms 24 Sep 2025 294th FortuiteMan 🇫🇷 807 57 2ms 28 Nov 2025 294th Pyroan 807 57 2ms 17 Dec 2025 313th MadMax129 793 58 2ms 25 Dec 2019 313th bastienvoirin 🇫🇷 793 58 1ms 24 Apr 2020 313th iddoroshenko 793 58 1ms 27 Jul 2020 313th LexouDuck 793 58 1ms 24 Oct 2020 313th Evoniuk 793 58 1ms 30 May 2021 313th KatieLG 🇬🇧 793 58 2ms 19 Jun 2021 313th AIn0n 793 58 2ms 11 Jul 2021 313th garrisonhh 793 58 2ms 15 Aug 2021 First Prev 241–320 of 596 Next Last