Fibonacci in C in chars. 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 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 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 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 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 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 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 Chars Time Submitted 399th Xwilarg 🇫🇷 672 67 1ms 17 Nov 2021 399th michatmon 672 67 2ms 11 Jan 2022 399th martinnorling 🇸🇪 672 67 1ms 8 Feb 2022 399th JasonRaubenheimer 672 67 1ms 8 Jul 2023 399th jtaxen 672 67 1ms 26 Apr 2024 399th CutSandstone 672 67 1ms 5 Jul 2024 407th pingu19 662 68 1ms 16 Oct 2019 407th mxchen2001 662 68 2ms 18 Nov 2020 407th LeeCamp 662 68 1ms 28 Apr 2022 407th esseeffeenne 662 68 1ms 6 Jun 2022 407th GameChaos 662 68 1ms 16 Jun 2022 412th TornadoCookie 652 69 1ms 17 Oct 2022 412th xnacly 🇩🇪 652 69 1ms 30 Jun 2023 412th Pyro569 652 69 1ms 30 Jul 2023 412th eiburns 652 69 1ms 7 Sep 2023 412th viitanet 652 69 1ms 22 Oct 2023 412th hacker112 🇸🇪 652 69 1ms 12 Jun 2024 412th msbranicky 652 69 2ms 3 Jul 2024 412th SwordF-Official 652 69 1ms 3 Jun 2025 412th Alex-Huggett 🇬🇧 652 69 2ms 13 Sep 2025 412th zgialor-lab 652 69 2ms 17 Dec 2025 422nd PatrickLove 643 70 1ms 26 Jun 2019 422nd furokku 643 70 1ms 14 Feb 2021 422nd gabe-gallegos 643 70 2ms 25 Mar 2025 422nd RYSF13 🇨🇳 643 70 2ms 19 Jul 2025 426th chunky 634 71 1ms 2 Oct 2020 426th jackrosenb 634 71 1ms 7 Oct 2020 426th Lizard314 634 71 1ms 10 Nov 2020 426th yoshykai 634 71 1ms 16 Jun 2023 426th jccummi1 634 71 1ms 29 Oct 2023 426th LawrenceZ1A 🇨🇦 634 71 1ms 25 Feb 2024 426th nstearns96 🇬🇧 634 71 2ms 13 Sep 2024 433rd kendstott 625 72 1ms 25 Jun 2019 433rd kirbyyourmom 🇬🇧 625 72 2ms 2 Mar 2021 433rd mqyhlkahu 625 72 1ms 10 Sep 2023 433rd 0dyse 625 72 2ms 6 May 2025 433rd bpharaldsson 625 72 2ms 2 days ago 438th DrProfPatPending 616 73 1ms 25 Jun 2019 438th nwdamgaard 616 73 2ms 19 Dec 2021 440th willpiam 608 74 1ms 21 Sep 2021 440th dillon-duncando 608 74 2ms 24 Dec 2021 440th Vexxter9 🇳🇱 608 74 1ms 20 Sep 2024 443rd KiwiKoder0123 600 75 1ms 28 Jun 2019 443rd StHagel 600 75 2ms 25 May 2023 443rd Azearia 600 75 1ms 9 Aug 2023 443rd NDR0216 🇹🇼 600 75 12ms 8 May 2024 443rd RedzGoose 🇦🇺 600 75 1ms 19 Sep 2024 443rd Sciman101 600 75 2ms 26 Mar 2025 449th HectorPeeters 592 76 11ms 26 Mar 2021 449th opsiff 592 76 2ms 8 Aug 2021 449th iwalker2702 592 76 2ms 9 Nov 2021 449th GreenBeansAgainstVeganism 592 76 11ms 28 May 2022 449th james-downey 592 76 12ms 14 Jul 2022 449th DaCuteRaccoon 592 76 1ms 12 Dec 2022 449th NeatCrown 🇨🇦 592 76 2ms 14 Dec 2022 449th tvcv901 592 76 10ms 22 Mar 2023 449th hjcafaroUC 592 76 2ms 5 Aug 2023 449th ridingqwerty 🇺🇸 592 76 11ms 21 Dec 2023 459th ramytarchichy 584 77 12ms 22 Jun 2019 459th EnergeticBark 584 77 2ms 14 Jul 2019 459th jngbsn 584 77 1ms 30 Jun 2020 459th ei14 584 77 11ms 23 Jun 2021 459th mickmurci 584 77 12ms 7 Apr 2023 459th IdkWhatIsIdk 584 77 1ms 27 Nov 2024 465th DeepuBenson 577 78 1ms 27 Mar 2020 465th dev-loop0 577 78 2ms 20 Aug 2020 465th oschmidh 577 78 11ms 18 Nov 2020 465th muztanger 577 78 2ms 1 Jan 2021 465th 444nuits 577 78 12ms 31 Jan 2022 465th junten1 577 78 1ms 18 Oct 2024 471st davidgblanes 570 79 2ms 22 Sep 2019 471st SiBeepBoop 570 79 17ms 14 Apr 2025 471st BlueGummi 570 79 12ms 10 days ago 474th volpi-m 🇫🇷 563 80 1ms 30 Aug 2020 474th denballakh 563 80 1ms 25 Nov 2021 474th Adix-null 🇱🇹 563 80 2ms 4 Jul 2023 474th StupidHobbit 563 80 2ms 25 Nov 2025 474th westerntoad 563 80 2ms 27 Dec 2025 479th NJRist 🇺🇸 556 81 2ms 24 Nov 2022 479th s-gannon 556 81 14ms 3 May 2023 First Prev 401–480 of 599 Next Last