Fibonacci in C in bytes. Cheevos Holes Recent Holes Langs Medals Misc 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 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 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 Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir 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 Erlang 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 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 Erlang 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 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 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 Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 375th godraadam 687 67 2ms 13 Apr 2021 375th Xwilarg 🇫🇷 687 67 2ms 17 Nov 2021 375th michatmon 687 67 3ms 11 Jan 2022 375th martinnorling 🇸🇪 687 67 2ms 8 Feb 2022 375th JasonRaubenheimer 687 67 2ms 8 Jul 2023 375th jtaxen 687 67 2ms 26 Apr 2024 375th CutSandstone 687 67 1ms 5 Jul 2024 383rd pingu19 676 68 2ms 16 Oct 2019 383rd mxchen2001 676 68 2ms 18 Nov 2020 383rd LeeCamp 676 68 2ms 28 Apr 2022 383rd esseeffeenne 676 68 2ms 6 Jun 2022 383rd GameChaos 676 68 2ms 16 Jun 2022 388th xnacly 🇩🇪 667 69 2ms 30 Jun 2023 388th Pyro569 667 69 2ms 30 Jul 2023 388th eiburns 667 69 2ms 7 Sep 2023 388th CheeseCake628 🇳🇴 667 69 2ms 11 Oct 2023 388th viitanet 667 69 2ms 22 Oct 2023 388th hacker112 🇸🇪 667 69 2ms 12 Jun 2024 388th msbranicky 667 69 2ms 3 Jul 2024 388th SwordF-Official 667 69 2ms 3 Jun 2025 388th Alex-Huggett 🇬🇧 667 69 2ms 13 Sep 2025 397th PatrickLove 657 70 6ms 26 Jun 2019 397th furokku 657 70 2ms 14 Feb 2021 397th TornadoCookie 657 70 2ms 16 Oct 2022 397th gabe-gallegos 657 70 2ms 25 Mar 2025 397th RYSF13 🇨🇳 657 70 3ms 19 Jul 2025 402nd jackrosenb 648 71 2ms 7 Oct 2020 402nd yoshykai 648 71 2ms 16 Jun 2023 402nd jccummi1 648 71 2ms 29 Oct 2023 402nd LawrenceZ1A 🇨🇦 648 71 2ms 25 Feb 2024 402nd nstearns96 🇬🇧 648 71 2ms 13 Sep 2024 407th kendstott 639 72 1ms 25 Jun 2019 407th mqyhlkahu 639 72 2ms 10 Sep 2023 407th 0dyse 639 72 2ms 6 May 2025 410th DrProfPatPending 630 73 2ms 25 Jun 2019 410th nwdamgaard 630 73 2ms 19 Dec 2021 410th kellantech 630 73 2ms 2 Jun 2023 413th willpiam 622 74 5ms 21 Sep 2021 413th dillon-duncando 622 74 2ms 24 Dec 2021 413th Vexxter9 🇳🇱 622 74 2ms 20 Sep 2024 416th KiwiKoder0123 613 75 2ms 28 Jun 2019 416th StHagel 613 75 2ms 25 May 2023 416th Azearia 613 75 2ms 9 Aug 2023 416th NDR0216 🇹🇼 613 75 12ms 8 May 2024 416th RedzGoose 🇦🇺 613 75 2ms 19 Sep 2024 416th Sciman101 613 75 2ms 26 Mar 2025 416th albanian-laundromat 613 75 2ms 13 days ago 423rd HectorPeeters 605 76 11ms 26 Mar 2021 423rd opsiff 605 76 2ms 8 Aug 2021 423rd iwalker2702 605 76 2ms 9 Nov 2021 423rd GreenBeansAgainstVeganism 605 76 11ms 28 May 2022 423rd james-downey 605 76 11ms 14 Jul 2022 423rd DaCuteRaccoon 605 76 2ms 12 Dec 2022 423rd NeatCrown 🇨🇦 605 76 2ms 14 Dec 2022 423rd tvcv901 605 76 12ms 22 Mar 2023 423rd hjcafaroUC 605 76 2ms 5 Aug 2023 423rd ridingqwerty 🇺🇸 605 76 12ms 21 Dec 2023 433rd ramytarchichy 597 77 13ms 22 Jun 2019 433rd EnergeticBark 597 77 2ms 14 Jul 2019 433rd jngbsn 597 77 2ms 30 Jun 2020 433rd ei14 597 77 14ms 23 Jun 2021 433rd mickmurci 597 77 12ms 7 Apr 2023 433rd IdkWhatIsIdk 597 77 2ms 27 Nov 2024 439th DeepuBenson 590 78 2ms 27 Mar 2020 439th dev-loop0 590 78 2ms 20 Aug 2020 439th oschmidh 590 78 11ms 18 Nov 2020 439th muztanger 590 78 2ms 1 Jan 2021 439th 444nuits 590 78 13ms 31 Jan 2022 439th junten1 590 78 2ms 18 Oct 2024 445th davidgblanes 582 79 2ms 22 Sep 2019 445th SiBeepBoop 582 79 17ms 14 Apr 2025 447th volpi-m 🇫🇷 575 80 2ms 30 Aug 2020 447th denballakh 575 80 2ms 25 Nov 2021 447th Adix-null 🇱🇹 575 80 2ms 4 Jul 2023 450th NJRist 🇺🇸 568 81 3ms 24 Nov 2022 First Prev 376–450 of 559 Next Last