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 42nd Maximizer02 981 52 381ms 17 Sep 2025 42nd cmddog 981 52 364ms 17 Sep 2025 42nd LordSir101 981 52 370ms 18 Sep 2025 42nd albanian-laundromat 981 52 374ms 30 Oct 2025 42nd Soyo-Wind 981 52 328ms 3 Nov 2025 42nd solisolu 981 52 375ms 20 days ago 42nd Andrey2001 981 52 378ms 17 days ago 42nd KasperKivimaeki 🇫🇮 981 52 364ms 15 days ago 84th bac0id 962 53 389ms 21 Nov 2021 84th daniel-skalik 🇨🇿 962 53 362ms 21 Nov 2021 84th jmhowl 962 53 384ms 21 Nov 2021 84th pallbo 962 53 383ms 21 Nov 2021 84th revlayle 🇺🇸 962 53 371ms 21 Nov 2021 84th ScottHamper 962 53 378ms 21 Nov 2021 84th theentropic 962 53 362ms 21 Nov 2021 84th KrausRaus 🇺🇸 962 53 365ms 15 Dec 2021 84th Re-Adventures 🇮🇳 962 53 366ms 15 Feb 2022 84th hemphen 962 53 349ms 30 Aug 2022 84th jhpaques 🇫🇷 962 53 368ms 3 Dec 2022 84th annaproxy 962 53 383ms 22 Jan 2023 84th nesrak1 962 53 384ms 12 Oct 2024 84th plcc0 962 53 345ms 28 Mar 2025 84th gigaprofisi 🇺🇸 962 53 379ms 26 days ago 84th dokutan 962 53 367ms 23 days ago 100th AdrialaD 944 54 354ms 21 Nov 2021 100th aliakseikalosha 944 54 378ms 21 Nov 2021 100th cros107 🇦🇺 944 54 346ms 21 Nov 2021 100th iznax 944 54 386ms 21 Nov 2021 100th simon-biber 944 54 368ms 5 Feb 2022 100th scpchicken 🇵🇼 944 54 398ms 6 Jul 2022 100th arctouch-sergeymetlov 944 54 340ms 30 Jan 2023 100th arctouch-cristiannevianna 944 54 372ms 30 Jan 2023 100th Adix-null 🇱🇹 944 54 391ms 4 Jul 2023 100th BREMAUCY 🇫🇷 944 54 362ms 18 Jul 2023 100th mathisfun271 944 54 378ms 21 Feb 2024 100th HumanoidCPU 944 54 359ms 16 Mar 2024 100th andrewjc2000 944 54 324ms 7 Mar 2025 100th Theremon72 944 54 323ms 12 Mar 2025 100th matejmatik123 🇸🇰 944 54 338ms 12 Aug 2025 115th Hankinabag 927 55 359ms 21 Nov 2021 115th Jeffreyvde 927 55 356ms 21 Nov 2021 115th Rens-br 927 55 341ms 21 Nov 2021 115th fredrik-bakke 🇳🇴 927 55 342ms 27 Mar 2022 115th Matgc04 927 55 391ms 31 May 2023 120th joelgduggan 911 56 361ms 21 Nov 2021 120th marcin7Cd 911 56 359ms 21 Nov 2021 120th pan4ever 911 56 363ms 21 Nov 2021 120th MichaelMBradley 🇨🇦 911 56 364ms 21 Mar 2022 120th hamhub7 911 56 349ms 5 Aug 2022 120th madeforlosers 911 56 374ms 22 Nov 2024 120th SwordF-Official 911 56 352ms 12 Apr 2025 120th blaztoma 🇱🇹 911 56 372ms 17 Aug 2025 128th Rhexis 895 57 385ms 21 Nov 2021 128th roavin 895 57 360ms 24 Jun 2022 128th Seanharrs 895 57 366ms 25 Aug 2022 128th Tavress 895 57 355ms 11 May 2023 128th postie77 895 57 361ms 19 May 2023 128th RandGuy 895 57 349ms 25 Jan 2024 128th ashtraypettingzoo 🇺🇸 895 57 368ms 19 Mar 2024 128th ertz1ertz 895 57 360ms 12 Jul 2024 128th gblikas 895 57 362ms 17 Aug 2024 128th arcpolaris 895 57 351ms 12 Dec 2024 128th CheeseCake628 🇳🇴 895 57 374ms 17 Jul 2025 128th Emutis 🇱🇹 895 57 367ms 16 Aug 2025 140th AndrewSalls 879 58 355ms 21 Nov 2021 140th aplato 879 58 361ms 21 Nov 2021 140th stdstijn 879 58 349ms 21 Nov 2021 140th magnusbakken 879 58 342ms 6 Dec 2021 140th p-vf 🇨🇭 879 58 348ms 16 Jul 2022 140th neel11235813 879 58 390ms 26 Mar 2024 140th Just4FunCoder 879 58 365ms 26 Aug 2024 140th WalrusesAreAwesome 879 58 338ms 25 Mar 2025 148th kebal2 864 59 343ms 21 Nov 2021 148th tdkkdt 🇷🇺 864 59 367ms 21 Nov 2021 148th arctouch-andresato 864 59 364ms 11 Nov 2022 First Prev 76–150 of 322 Next Last