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 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 Calendar 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 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 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 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 Calendar 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 526th ArturLukianov 489 94 1ms 10 Aug 2020 526th Mortis66666 489 94 2ms 27 May 2022 526th PeytonNowlin 489 94 2ms 9 Oct 2025 529th abailey2020 🇺🇸 484 95 2ms 3 Oct 2020 529th lemmaandrew 484 95 2ms 23 Jan 2021 529th zt14427 484 95 1ms 28 Feb 2023 529th epic-programmer-guy 484 95 2ms 17 Dec 2023 529th MID246 484 95 2ms 14 Nov 2024 534th dmoa 479 96 2ms 21 Mar 2021 534th shagunsingh30 479 96 1ms 2 Apr 2022 536th nico-bachner 474 97 2ms 28 Dec 2020 536th atazzam 🇺🇸 474 97 1ms 2 Sep 2022 538th GnotAGnelf 469 98 2ms 24 Nov 2020 538th kennyhow 469 98 1ms 27 Jan 2021 538th Robbe7730 469 98 1ms 17 Nov 2021 541st azure-blondon 460 100 2ms 18 Aug 2024 542nd aaronze 🇦🇺 455 101 1ms 29 Apr 2021 542nd NovemberOrWhatever 455 101 2ms 6 Nov 2022 544th 4ndyJ 🇬🇧 451 102 2ms 17 Dec 2022 545th cgjohannsen 447 103 2ms 10 Jun 2022 546th 52525rr 442 104 1ms 20 Oct 2025 547th MisterrLuck 438 105 1ms 11 Sep 2023 548th adoxography 434 106 11ms 3 Oct 2019 548th siddharth2411 434 106 1ms 22 Mar 2020 550th MunibullahShah 426 108 2ms 31 Aug 2019 551st george1605 422 109 2ms 14 Feb 2023 552nd Zach1031 418 110 2ms 15 Nov 2025 553rd barbu110 407 113 13ms 2 Dec 2019 554th JesseNoEyes 🇺🇸 400 115 2ms 4 Oct 2024 555th milliorn 393 117 2ms 9 Feb 2020 555th plainoldcheese 🇦🇶 393 117 2ms 23 Mar 2023 557th Chesium 387 119 2ms 9 Aug 2020 558th kenballus 383 120 11ms 12 Nov 2019 558th CyberTapir 383 120 11ms 28 Aug 2024 558th Rex-xeR 383 120 1ms 3 Feb 2025 561st Sascha37 🇩🇪 380 121 12ms 20 Sep 2025 562nd AshishAntil07 377 122 2ms 10 Oct 2022 562nd brimstonetrader 377 122 1ms 15 Jan 2024 564th Philipuss1 362 127 1ms 14 Aug 2020 565th kittrz9 351 131 7ms 19 Jul 2019 566th jckjjcckk 348 132 1ms 16 Feb 2024 567th Kreavita 346 133 2ms 3 Feb 2022 568th cthierfelder 🇲🇨 341 135 2ms 3 Sep 2025 569th Mr-Backdoor 336 137 2ms 26 Mar 2022 569th lanzarote0tr 336 137 2ms 13 Aug 2023 571st samuelecarafassi 326 141 8ms 28 Nov 2020 572nd Bananapants22 319 144 11ms 21 Aug 2022 573rd SolidTux 317 145 2ms 6 Jan 2020 573rd MoxPoto 317 145 2ms 30 Jul 2021 575th Rowdydangerous 311 148 1ms 19 Feb 2021 576th Noah-Fox 309 149 2ms 1 Jun 2022 577th Haksell 🇦🇶 307 150 1ms 28 Feb 2023 578th Cr3aHal0 297 155 11ms 5 Jul 2019 579th Lillie99 293 157 12ms 9 Apr 2024 580th kevinnaviapaiva 284 162 2ms 6 Mar 2025 581st AX3M 267 172 1ms 1 Dec 2019 581st Shubham7667-dw 267 172 2ms 8 Nov 2024 583rd RockOfStone 264 174 1ms 23 Mar 2024 584th mokymok 🇺🇸 253 182 1ms 9 Nov 2021 585th KatieLG-Transpiler 🇬🇧 250 184 1ms 23 Jun 2022 586th sMau25 238 193 1ms 7 Oct 2020 587th huntermali 192 240 12ms 29 Oct 2023 588th tanguysegarra 150 307 9ms 7 Jun 2019 589th adcpetechsoft 145 317 2ms 22 Feb 2025 590th enok82 134 344 2ms 27 Aug 2019 591st Rambso 56 828 2ms 6 Sep 2024 First Prev 526–591 of 591
