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 149th arctouch-andresato 864 59 364ms 11 Nov 2022 149th maki-chan 864 59 363ms 9 Jun 2023 149th LS2021 864 59 362ms 23 Nov 2023 149th acotis 864 59 361ms 11 Jan 2025 149th 123mjb 864 59 356ms 23 Jun 2025 149th ibiza240 864 59 368ms 21 Sep 2025 149th tomh1012 864 59 360ms 14 days ago 158th Bobini1 🇵🇱 850 60 384ms 21 Nov 2021 158th JDiLenarda 🇫🇷 850 60 359ms 21 Nov 2021 158th najs91 850 60 389ms 21 Nov 2021 158th yzhs 🇩🇪 850 60 379ms 21 Nov 2021 158th joharasmus 🇸🇪 850 60 362ms 19 Jul 2022 158th JaroPolhosDev 850 60 349ms 13 Sep 2023 158th GarethSpring 850 60 360ms 19 Sep 2023 158th mqtze 850 60 355ms 21 Sep 2023 158th puddnova 850 60 378ms 22 Oct 2024 158th michelebastione 🇮🇹 850 60 360ms 13 Aug 2025 168th PatrickKocken 836 61 371ms 21 Nov 2021 168th TeDeMos 836 61 355ms 21 Nov 2021 168th castur1 836 61 375ms 27 Jan 2022 168th centrolutions 836 61 346ms 24 Nov 2022 168th dorschmeister 836 61 366ms 19 May 2023 168th fkantelberg 836 61 348ms 15 Jul 2023 168th josephdwalker 836 61 380ms 14 Nov 2023 168th epic-programmer-guy 836 61 339ms 25 Dec 2023 168th codewrite 🇬🇧 836 61 388ms 19 Apr 2025 168th Alex-Huggett 🇬🇧 836 61 357ms 13 Sep 2025 178th jahakari 823 62 361ms 21 Nov 2021 178th MichalMarsalek 🇨🇿 823 62 353ms 29 Nov 2021 178th TheRealOhead 🇺🇸 823 62 361ms 25 Nov 2022 178th Mezzofloat 823 62 346ms 24 Aug 2023 178th nyoshe 823 62 358ms 10 Oct 2023 178th hippopotam00sehead 🇨🇦 823 62 352ms 11 Sep 2024 178th Stockoh 🇫🇷 823 62 374ms 4 Nov 2024 178th desecaw13 823 62 331ms 24 Jan 2025 186th ILMTitan 810 63 347ms 21 Nov 2021 186th Domicnt 810 63 356ms 1 Jan 2022 186th CedricGebistorf 810 63 360ms 3 Feb 2022 186th ChrisTheisen 810 63 361ms 13 Dec 2022 186th TimJackMaster 810 63 370ms 25 Jan 2023 186th gazle 810 63 355ms 25 Apr 2024 192nd muztanger 797 64 345ms 21 Nov 2021 192nd Xwilarg 🇫🇷 797 64 358ms 21 Nov 2021 192nd Ripick 797 64 381ms 30 Apr 2023 192nd usernamethatisnttaken 797 64 376ms 6 Sep 2023 192nd Mikey-Beep 🇬🇧 797 64 371ms 24 Jul 2025 197th Andre3582 785 65 408ms 21 Nov 2021 197th enbyte 785 65 366ms 21 Nov 2021 197th MLPdiscord 785 65 369ms 6 Jan 2022 197th Nickmiste 785 65 343ms 13 Nov 2022 197th mqyhlkahu 785 65 350ms 10 Sep 2023 197th trinityy-7 785 65 373ms 6 Mar 2024 197th msbranicky 785 65 350ms 3 Jul 2024 204th aaronze 🇦🇺 773 66 365ms 21 Nov 2021 204th elephantpanda 773 66 352ms 26 Aug 2022 204th eshilo-draper 773 66 354ms 5 Oct 2022 204th heanyang1 773 66 368ms 22 Apr 2025 204th jacekwladzinski 773 66 349ms 2 Oct 2025 204th dpethes 773 66 367ms 7 days ago 210th TheMickeyMouse 761 67 333ms 21 Nov 2021 210th aDwarfNamedUrist 761 67 349ms 21 Nov 2022 210th glatzert 761 67 371ms 12 May 2023 210th Sciman101 761 67 366ms 15 May 2023 210th eiburns 761 67 351ms 7 Sep 2023 210th rollershutter 761 67 327ms 29 Jan 2025 210th kevinnaviapaiva 761 67 320ms 19 Feb 2025 217th jcheritat 750 68 367ms 21 Nov 2021 217th PhonicCanine 750 68 378ms 21 Nov 2021 217th Gpopcorn 750 68 344ms 31 Mar 2022 217th Mortis66666 750 68 346ms 27 May 2022 217th 104210 750 68 354ms 12 Sep 2022 217th Pyro569 750 68 366ms 31 Jul 2023 223rd martinnorling 🇸🇪 739 69 357ms 15 Feb 2022 223rd PyryL 🇫🇮 739 69 358ms 23 Aug 2024 223rd Flix7dev 🇧🇪 739 69 362ms 21 Oct 2025 First Prev 151–225 of 323 Next Last