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 Minesweeper Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number 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p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi 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 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 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Bytes Time Submitted 145th 123mjb 864 59 355ms 23 Jun 2025 145th ibiza240 864 59 312ms 21 Sep 2025 153rd Bobini1 🇵🇱 850 60 313ms 21 Nov 2021 153rd JDiLenarda 🇫🇷 850 60 339ms 21 Nov 2021 153rd najs91 850 60 373ms 21 Nov 2021 153rd yzhs 🇩🇪 850 60 398ms 21 Nov 2021 153rd joharasmus 🇸🇪 850 60 326ms 19 Jul 2022 153rd JaroPolhosDev 850 60 299ms 13 Sep 2023 153rd GarethSpring 850 60 315ms 19 Sep 2023 153rd mqtze 850 60 347ms 21 Sep 2023 153rd puddnova 850 60 314ms 22 Oct 2024 153rd michelebastione 🇮🇹 850 60 318ms 13 Aug 2025 163rd PatrickKocken 836 61 334ms 21 Nov 2021 163rd TeDeMos 836 61 336ms 21 Nov 2021 163rd castur1 836 61 319ms 27 Jan 2022 163rd centrolutions 836 61 312ms 24 Nov 2022 163rd dorschmeister 836 61 363ms 19 May 2023 163rd fkantelberg 836 61 350ms 15 Jul 2023 163rd josephdwalker 836 61 276ms 14 Nov 2023 163rd epic-programmer-guy 836 61 362ms 25 Dec 2023 163rd codewrite 🇬🇧 836 61 358ms 19 Apr 2025 163rd Alex-Huggett 🇬🇧 836 61 346ms 13 Sep 2025 173rd jahakari 823 62 350ms 21 Nov 2021 173rd MichalMarsalek 🇨🇿 823 62 379ms 29 Nov 2021 173rd TheRealOhead 🇺🇸 823 62 336ms 25 Nov 2022 173rd Mezzofloat 823 62 292ms 24 Aug 2023 173rd nyoshe 823 62 331ms 10 Oct 2023 173rd hippopotam00sehead 🇨🇦 823 62 341ms 11 Sep 2024 173rd Stockoh 🇫🇷 823 62 317ms 4 Nov 2024 173rd desecaw13 823 62 391ms 24 Jan 2025 181st ILMTitan 810 63 312ms 21 Nov 2021 181st Domicnt 810 63 344ms 1 Jan 2022 181st CedricGebistorf 810 63 338ms 3 Feb 2022 181st ChrisTheisen 810 63 314ms 13 Dec 2022 181st TimJackMaster 810 63 341ms 25 Jan 2023 181st gazle 810 63 304ms 25 Apr 2024 181st tomh1012 810 63 295ms 5 Sep 2025 188th muztanger 797 64 309ms 21 Nov 2021 188th Xwilarg 🇫🇷 797 64 345ms 21 Nov 2021 188th Ripick 797 64 361ms 30 Apr 2023 188th usernamethatisnttaken 797 64 348ms 6 Sep 2023 188th Mikey-Beep 🇬🇧 797 64 330ms 24 Jul 2025 193rd Andre3582 785 65 341ms 21 Nov 2021 193rd enbyte 785 65 329ms 21 Nov 2021 193rd MLPdiscord 785 65 373ms 6 Jan 2022 193rd Nickmiste 785 65 347ms 13 Nov 2022 193rd mqyhlkahu 785 65 354ms 10 Sep 2023 193rd trinityy-7 785 65 363ms 6 Mar 2024 193rd msbranicky 785 65 335ms 3 Jul 2024 200th aaronze 🇦🇺 773 66 327ms 21 Nov 2021 200th elephantpanda 773 66 333ms 26 Aug 2022 200th eshilo-draper 773 66 333ms 5 Oct 2022 200th heanyang1 773 66 335ms 22 Apr 2025 200th jacekwladzinski 773 66 336ms 2 Oct 2025 205th mickeyMouse1108 761 67 377ms 21 Nov 2021 205th aDwarfNamedUrist 761 67 336ms 21 Nov 2022 205th glatzert 761 67 354ms 12 May 2023 205th Sciman101 761 67 337ms 15 May 2023 205th eiburns 761 67 353ms 7 Sep 2023 205th rollershutter 761 67 310ms 29 Jan 2025 205th kevinnaviapaiva 761 67 323ms 19 Feb 2025 212th jcheritat 750 68 293ms 21 Nov 2021 212th PhonicCanine 750 68 307ms 21 Nov 2021 212th Gpopcorn 750 68 306ms 31 Mar 2022 212th Mortis66666 750 68 331ms 27 May 2022 212th 104210 750 68 339ms 12 Sep 2022 212th Pyro569 750 68 327ms 31 Jul 2023 218th martinnorling 🇸🇪 739 69 379ms 15 Feb 2022 218th dpethes 739 69 365ms 9 Jan 2024 218th PyryL 🇫🇮 739 69 332ms 23 Aug 2024 218th Flix7dev 🇧🇪 739 69 375ms 15 days ago 222nd Cbrt74088 718 71 324ms 21 Nov 2021 222nd MrGraduate 718 71 302ms 21 Nov 2021 222nd ccolella-mdc 718 71 316ms 12 Oct 2023 225th charliegaming 708 72 320ms 3 Oct 2023 First Prev 151–225 of 315 Next Last