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 442nd ridingqwerty 🇺🇸 605 76 11ms 21 Dec 2023 452nd ramytarchichy 597 77 12ms 22 Jun 2019 452nd EnergeticBark 597 77 2ms 14 Jul 2019 452nd jngbsn 597 77 1ms 30 Jun 2020 452nd ei14 597 77 11ms 23 Jun 2021 452nd mickmurci 597 77 12ms 7 Apr 2023 452nd IdkWhatIsIdk 597 77 1ms 27 Nov 2024 458th DeepuBenson 590 78 1ms 27 Mar 2020 458th dev-loop0 590 78 2ms 20 Aug 2020 458th oschmidh 590 78 11ms 18 Nov 2020 458th muztanger 590 78 2ms 1 Jan 2021 458th 444nuits 590 78 12ms 31 Jan 2022 458th junten1 590 78 1ms 18 Oct 2024 464th davidgblanes 582 79 2ms 22 Sep 2019 464th SiBeepBoop 582 79 17ms 14 Apr 2025 466th volpi-m 🇫🇷 575 80 1ms 30 Aug 2020 466th denballakh 575 80 1ms 25 Nov 2021 466th Adix-null 🇱🇹 575 80 2ms 4 Jul 2023 466th StupidHobbit 575 80 2ms 14 days ago 470th NJRist 🇺🇸 568 81 2ms 24 Nov 2022 470th s-gannon 568 81 14ms 3 May 2023 472nd markus-rekdal 561 82 11ms 4 Jun 2019 472nd stdstijn 561 82 2ms 10 May 2020 472nd Adrien-AM 561 82 12ms 31 Jan 2022 472nd CameronGBell 561 82 2ms 10 Nov 2022 472nd dpethes 561 82 2ms 9 Jan 2024 472nd PyryL 🇫🇮 561 82 2ms 23 Aug 2024 472nd jorbDehmel 🇺🇸 561 82 1ms 20 Sep 2024 479th PeriBooty 554 83 11ms 26 Nov 2019 479th Smetalo 554 83 1ms 25 Aug 2022 479th Qruintrox 554 83 2ms 24 Jun 2023 482nd phpboyscout 548 84 2ms 26 May 2021 482nd OttscoMC 548 84 1ms 18 Jun 2021 482nd ANovelForStudy 548 84 1ms 9 Jun 2023 482nd fkantelberg 548 84 2ms 15 Jul 2023 482nd sbercx 548 84 11ms 29 Jul 2023 487th mxwli 541 85 1ms 16 May 2021 487th Kasci 541 85 2ms 7 Dec 2021 487th stonethurg 541 85 2ms 14 Feb 2023 487th VictorFordham 541 85 1ms 4 Mar 2023 487th ilovapples 541 85 2ms 9 Jun 2025 492nd drkameleon 🇪🇸 535 86 10ms 28 Jan 2020 492nd ms-tingliang 535 86 2ms 6 Aug 2022 492nd AZ9tumas 535 86 2ms 15 Oct 2022 492nd GWStuart 535 86 2ms 15 Sep 2023 492nd Giantnoodlemonster 535 86 2ms 15 Sep 2024 492nd BlueGummi 535 86 11ms 15 Apr 2025 498th vonKrafft 529 87 2ms 25 Mar 2020 498th tm70 529 87 11ms 23 Jan 2021 498th ArianKG 529 87 1ms 21 Mar 2024 501st ottsco7697 523 88 1ms 3 Jul 2019 501st RustemB 🇷🇺 523 88 1ms 25 Aug 2020 501st TerenceTux 523 88 1ms 6 Jun 2023 501st BpbjsGreen 🇨🇳 523 88 1ms 7 Jul 2024 501st kurkale6ka 523 88 2ms 15 Aug 2024 506th ryguyNelson 517 89 1ms 12 Aug 2020 506th mhenion8293 🇺🇸 517 89 2ms 5 Jun 2021 506th ze-h 🇺🇸 517 89 1ms 19 Feb 2022 506th S-Ruban 517 89 1ms 26 Feb 2023 506th uncertaain 517 89 1ms 28 Dec 2023 506th tik25 517 89 1ms 28 Mar 2024 506th iilegacyyii 517 89 7ms 20 Jan 2025 513th humz2k 511 90 1ms 26 Sep 2022 513th Jaro32768 🇸🇰 511 90 1ms 20 Sep 2023 515th Verlio-H 505 91 2ms 17 Feb 2025 516th lilyyy411 500 92 1ms 10 Sep 2021 516th bryanmytko 500 92 14ms 5 Jul 2022 516th 104210 500 92 2ms 14 Sep 2022 516th DrPiranoid 500 92 1ms 22 Sep 2022 520th sm1lko 495 93 2ms 7 Dec 2022 520th aDwarfNamedUrist 495 93 11ms 12 Jul 2023 520th Sephirem98 495 93 1ms 24 Oct 2023 520th Unknownuserfrommars 495 93 1ms 20 Nov 2024 520th 0xA00 495 93 11ms 5 days ago 525th ArturLukianov 489 94 1ms 10 Aug 2020 First Prev 451–525 of 590 Next Last