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 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 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 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 42nd Maximizer02 981 52 364ms 17 Sep 2025 42nd cmddog 981 52 348ms 17 Sep 2025 42nd LordSir101 981 52 342ms 18 Sep 2025 42nd albanian-laundromat 981 52 316ms 4 days ago 42nd Soyo-Wind 981 52 303ms 98 mins ago 81st bac0id 962 53 358ms 21 Nov 2021 81st daniel-skalik 🇨🇿 962 53 330ms 21 Nov 2021 81st jmhowl 962 53 334ms 21 Nov 2021 81st pallbo 962 53 374ms 21 Nov 2021 81st revlayle 🇺🇸 962 53 346ms 21 Nov 2021 81st ScottHamper 962 53 354ms 21 Nov 2021 81st theentropic 962 53 348ms 21 Nov 2021 81st KrausRaus 🇺🇸 962 53 326ms 15 Dec 2021 81st Re-Adventures 🇮🇳 962 53 355ms 15 Feb 2022 81st hemphen 962 53 328ms 30 Aug 2022 81st jhpaques 🇫🇷 962 53 351ms 3 Dec 2022 81st annaproxy 962 53 330ms 22 Jan 2023 81st nesrak1 962 53 335ms 12 Oct 2024 81st plcc0 962 53 359ms 28 Mar 2025 95th AdrialaD 944 54 366ms 21 Nov 2021 95th aliakseikalosha 944 54 348ms 21 Nov 2021 95th cros107 🇦🇺 944 54 314ms 21 Nov 2021 95th iznax 944 54 375ms 21 Nov 2021 95th simon-biber 944 54 375ms 5 Feb 2022 95th scpchicken 🇵🇼 944 54 366ms 6 Jul 2022 95th arctouch-sergeymetlov 944 54 291ms 30 Jan 2023 95th arctouch-cristiannevianna 944 54 283ms 30 Jan 2023 95th Adix-null 🇱🇹 944 54 359ms 4 Jul 2023 95th BREMAUCY 🇫🇷 944 54 341ms 18 Jul 2023 95th mathisfun271 944 54 336ms 21 Feb 2024 95th HumanoidCPU 944 54 312ms 16 Mar 2024 95th dokutan 944 54 354ms 24 Jul 2024 95th andrewjc2000 944 54 337ms 7 Mar 2025 95th Theremon72 944 54 343ms 12 Mar 2025 95th matejmatik123 🇸🇰 944 54 378ms 12 Aug 2025 111th Hankinabag 927 55 318ms 21 Nov 2021 111th Jeffreyvde 927 55 354ms 21 Nov 2021 111th Rens-br 927 55 347ms 21 Nov 2021 111th fredrik-bakke 🇳🇴 927 55 320ms 27 Mar 2022 111th Matgc04 927 55 371ms 31 May 2023 116th joelgduggan 911 56 310ms 21 Nov 2021 116th marcin7Cd 911 56 335ms 21 Nov 2021 116th pan4ever 911 56 334ms 21 Nov 2021 116th MichaelMBradley 🇨🇦 911 56 420ms 21 Mar 2022 116th hamhub7 911 56 319ms 5 Aug 2022 116th madeforlosers 911 56 341ms 22 Nov 2024 116th SwordF-Official 911 56 337ms 12 Apr 2025 116th blaztoma 🇱🇹 911 56 308ms 17 Aug 2025 124th Rhexis 895 57 355ms 21 Nov 2021 124th roavin 895 57 306ms 24 Jun 2022 124th Seanharrs 895 57 345ms 25 Aug 2022 124th Tavress 895 57 391ms 11 May 2023 124th postie77 895 57 340ms 19 May 2023 124th RandGuy 895 57 318ms 25 Jan 2024 124th ashtraypettingzoo 🇺🇸 895 57 372ms 19 Mar 2024 124th ertz1ertz 895 57 323ms 12 Jul 2024 124th gblikas 895 57 364ms 17 Aug 2024 124th arcpolaris 895 57 324ms 12 Dec 2024 124th CheeseCake628 🇳🇴 895 57 346ms 17 Jul 2025 124th Emutis 🇱🇹 895 57 357ms 16 Aug 2025 136th AndrewSalls 879 58 325ms 21 Nov 2021 136th aplato 879 58 345ms 21 Nov 2021 136th stdstijn 879 58 329ms 21 Nov 2021 136th magnusbakken 879 58 288ms 6 Dec 2021 136th p-vf 🇨🇭 879 58 360ms 16 Jul 2022 136th neel11235813 879 58 380ms 26 Mar 2024 136th Just4FunCoder 879 58 357ms 26 Aug 2024 136th WalrusesAreAwesome 879 58 413ms 25 Mar 2025 144th kebal2 864 59 349ms 21 Nov 2021 144th tdkkdt 🇷🇺 864 59 348ms 21 Nov 2021 144th arctouch-andresato 864 59 337ms 11 Nov 2022 144th maki-chan 864 59 333ms 9 Jun 2023 144th LS2021 864 59 328ms 23 Nov 2023 144th acotis 864 59 314ms 11 Jan 2025 144th 123mjb 864 59 355ms 23 Jun 2025 First Prev 76–150 of 313 Next Last