Fibonacci in Fortran 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 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 Lily 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 Lily 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 Bytes Time Submitted 1st Lydxn 🇨🇦 1,000 44 38ms 14 Jul 2021 1st sisyphus-ppcg 🇦🇺 1,000 44 38ms 16 Sep 2021 1st primo-ppcg 🇹🇭 1,000 44 38ms 13 Dec 2021 1st prplz 🇦🇺 1,000 44 37ms 21 Dec 2021 1st SirBogman 🇺🇸 1,000 44 37ms 1 Jan 2022 1st btnlq 1,000 44 39ms 1 Feb 2022 1st ovs-code 🇩🇪 1,000 44 37ms 24 Aug 2023 1st marshallward 🇺🇸 1,000 44 39ms 1 Jan 2024 1st DialFrost 🇸🇬 1,000 44 41ms 18 Dec 2025 10th Tine86 957 46 37ms 20 Apr 2020 10th cure-honey 🇯🇵 957 46 38ms 1 May 2020 10th marcin7Cd 957 46 39ms 11 Oct 2020 10th LucaArgentiUCF 🇮🇹 957 46 38ms 28 Jan 2021 10th ZakkkkAttackkkk 🇵🇭 957 46 39ms 28 Jan 2022 10th stefangimmillaro 957 46 37ms 24 Sep 2022 10th MeWhenI 🇻🇦 957 46 38ms 14 Oct 2022 17th GrayJoKing 🇦🇺 898 49 39ms 17 Jan 2021 17th Andrey2001 898 49 40ms 25 Nov 2025 17th snoozingnewt 🇨🇦 898 49 40ms 30 hours ago 20th ivan-pi 🇸🇮 880 50 38ms 23 Jan 2023 20th Verlio-H 880 50 39ms 23 Dec 2023 20th Herbert00709 🇵🇱 880 50 38ms 1 Mar 2024 20th roupiq 🇵🇱 880 50 39ms 14 Mar 2024 20th dokutan 880 50 36ms 31 Oct 2024 20th albanian-laundromat 880 50 38ms 26 Aug 2025 26th Steffan153 🇫🇮 863 51 39ms 24 Jan 2023 27th Euler-37 846 52 37ms 4 Jun 2023 27th hacker112 🇸🇪 846 52 37ms 4 Jul 2024 29th jhpaques 🇫🇷 830 53 39ms 3 Dec 2022 29th Yewzir 🇧🇪 830 53 39ms 21 Nov 2023 29th wlaud9 830 53 38ms 5 Feb 2024 32nd raphaelimahorn 815 54 38ms 2 Sep 2021 32nd jared-hughes 815 54 38ms 3 Jan 2024 34th Carltoffel 🇩🇪 786 56 38ms 29 Nov 2021 35th Shanethegamer 🇺🇸 746 59 39ms 31 Dec 2023 36th CaedenHarper 🇨🇦 733 60 39ms 26 Aug 2025 37th trist224 🇫🇷 698 63 38ms 28 Nov 2022 37th oceko 698 63 37ms 28 Nov 2022 37th Anonymousellama21 698 63 40ms 9 Aug 2024 37th andrewjc2000 698 63 39ms 14 Jul 2025 41st ashtraypettingzoo 🇺🇸 688 64 38ms 21 Mar 2024 41st madeforlosers 688 64 40ms 21 Nov 2024 43rd ytaki0801 🇯🇵 677 65 37ms 19 Jun 2021 43rd Xwilarg 🇫🇷 677 65 38ms 17 Nov 2021 43rd mathisfun271 677 65 40ms 22 Feb 2024 43rd KasperKivimaeki 🇫🇮 677 65 41ms 10 Jan 2026 47th jvdp1 657 67 39ms 25 Dec 2020 47th msbranicky 657 67 39ms 3 Jul 2024 49th orthoplex 🇨🇽 638 69 37ms 22 Jan 2022 49th CedricGebistorf 638 69 38ms 4 Feb 2022 49th martinnorling 🇸🇪 638 69 38ms 8 Feb 2022 49th CheeseCake628 🇳🇴 638 69 39ms 11 Mar 2023 49th Maximizer02 638 69 37ms 1 Oct 2023 49th charliegaming 638 69 39ms 3 Oct 2023 49th jtaxen 638 69 37ms 30 Mar 2024 56th emgordon154 620 71 38ms 26 Jul 2024 57th ToE42 611 72 40ms 16 May 2025 58th Emutis 🇱🇹 603 73 40ms 11 Jan 2026 59th epic-programmer-guy 571 77 38ms 1 Jan 2024 60th inverseLorentz 🇦🇺 557 79 38ms 21 Feb 2024 61st bac0id 543 81 38ms 18 Oct 2021 62nd KatieLG 🇬🇧 537 82 38ms 30 Nov 2020 63rd sech1p 🇵🇱 512 86 39ms 30 Oct 2021 64th BBoehm 🇩🇪 468 94 39ms 23 Dec 2020 65th Garklein 🇨🇦 444 99 40ms 6 Jan 2022 66th Zach1031 431 102 41ms 21 Nov 2025 67th sm1lko 423 104 37ms 14 Dec 2022 68th ashwinvis 341 129 39ms 18 Apr 2020 69th scpchicken 🇵🇼 275 160 41ms 22 Jan 2022 70th Noah-Fox 254 173 39ms 1 Jun 2022 71st Natanaelel 🇸🇪 243 181 39ms 28 May 2021 72nd dillon-duncando 221 199 39ms 21 Dec 2021 73rd retrohun 86 509 43ms 27 Dec 2022 73rd HumanoidCPU 86 509 41ms 30 Jun 2025 75th Adix-null 🇱🇹 73 602 42ms 30 Jul 2023 1–75 of 75
