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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 APL 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 ><> ALGOL 68 ArkScript 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 APL 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 Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 241st ericlangedijk 🇸🇮 699 73 372ms 6 Mar 2022 241st xbxbxb007 699 73 380ms 11 Jan 2024 243rd ezrillex 689 74 375ms 21 Nov 2021 243rd HassanAliKadhem 🇧🇭 689 74 376ms 16 Jan 2022 243rd lalkkot 689 74 378ms 29 Apr 2022 243rd phpboyscout 689 74 370ms 27 Apr 2023 243rd azure-blondon 689 74 367ms 5 May 2024 243rd Jonson26 689 74 374ms 6 days ago 249th mort607e 680 75 361ms 21 Nov 2021 249th lesserfish 680 75 374ms 21 Nov 2021 251st mykroft42 671 76 423ms 21 Nov 2021 252nd daviddostal 654 78 409ms 21 Nov 2021 252nd joll05 🇸🇪 654 78 389ms 21 Nov 2021 252nd hacktick 654 78 381ms 22 Mar 2022 252nd malworthy 654 78 391ms 13 Oct 2023 252nd brimstonetrader 654 78 347ms 5 Jan 2024 257th hklemp 🇩🇪 646 79 412ms 21 Nov 2021 257th MarkStockwellZA 646 79 388ms 4 Jan 2022 257th ElysiaVesper 646 79 371ms 19 Nov 2023 257th JesseNoEyes 🇺🇸 646 79 485ms 25 Sep 2024 257th qrakhen 646 79 438ms 5 Nov 2025 262nd brianonymous 630 81 374ms 30 Jul 2022 262nd KiwiLT 630 81 376ms 14 Nov 2022 264th lilyyy411 622 82 412ms 21 Nov 2021 265th ClFeSc 607 84 392ms 3 Aug 2022 266th Lizard314 600 85 372ms 21 Nov 2021 267th mduckles 593 86 368ms 18 Nov 2022 268th c0d3-4-F00d 🇩🇪 586 87 403ms 21 Nov 2021 268th Rambso 586 87 431ms 28 Mar 2025 270th dillon-duncando 580 88 393ms 21 Dec 2021 271st mihaits 573 89 379ms 21 Nov 2021 271st apocriva 573 89 399ms 24 Nov 2023 273rd JacobStanleyJones 567 90 386ms 21 Mar 2022 274th bschorno 560 91 406ms 29 Jul 2022 275th BradSissons 🇳🇿 554 92 412ms 21 Nov 2021 275th Xeoneid 554 92 400ms 21 Nov 2021 275th zaekyo 554 92 399ms 5 Jul 2022 275th Smetalo 554 92 399ms 24 Aug 2022 279th oschmidh 548 93 399ms 21 Nov 2021 279th elizj3 🇵🇱 548 93 388ms 21 Nov 2021 279th rifatx 548 93 428ms 24 Jul 2024 282nd aske0778 543 94 399ms 21 Nov 2021 282nd RockOfStone 543 94 374ms 23 Mar 2024 282nd BeansMage42 543 94 397ms 29 Dec 2024 285th ze-h 🇺🇸 531 96 369ms 12 Jan 2022 285th cingulataluke 531 96 440ms 2 Jun 2024 285th Emilioso007 531 96 430ms 28 Dec 2025 288th pikti 515 99 423ms 21 Nov 2021 288th artisiole 🇺🇸 515 99 373ms 24 Mar 2024 288th johannes-looney-lizard 515 99 414ms 29 Apr 2025 291st mhayesm 510 100 365ms 21 Nov 2021 291st Robbe7730 510 100 360ms 21 Nov 2021 293rd Jennifervl 🇸🇪 505 101 355ms 10 Dec 2021 293rd uncertaain 505 101 376ms 28 Dec 2023 295th tbschff 500 102 381ms 15 Apr 2022 296th richard-oelze 🇩🇪 490 104 445ms 24 Jan 2021 297th tik25 486 105 390ms 28 Mar 2024 298th wescombs10 481 106 398ms 30 Oct 2022 298th lbussell 481 106 401ms 16 Dec 2022 300th NovemberOrWhatever 477 107 382ms 6 Nov 2022 300th bilal2709 477 107 484ms 13 Aug 2025 300th Melvovin 477 107 432ms 17 Jan 2026 303rd Mortistar 472 108 393ms 18 Jul 2023 304th iPablol 468 109 390ms 25 Oct 2023 305th johnlowerytn 447 114 394ms 30 Dec 2024 306th sm1lko 440 116 386ms 12 Oct 2022 307th sd-tang 🇦🇺 436 117 409ms 12 Dec 2021 307th gpikmddk 436 117 409ms 17 Oct 2022 309th Noah-Fox 432 118 377ms 1 Jun 2022 310th arctouch-kseniyagaripova 429 119 415ms 9 Nov 2022 311th DaCuteRaccoon 421 121 407ms 28 Apr 2022 312th Anthony-Williams-06 411 124 383ms 30 Nov 2022 312th od86 411 124 401ms 12 Nov 2025 314th abailey2020 🇺🇸 408 125 403ms 21 Nov 2021 315th AwexoTeam 398 128 421ms 17 Jul 2025 316th Endoxos0 381 134 374ms 2 Sep 2022 317th RobertEves92 🇬🇧 372 137 418ms 8 Aug 2023 318th BarisYildiz 367 139 412ms 21 Nov 2021 319th Philipuss1 362 141 377ms 21 Nov 2021 320th arthvr9 359 142 429ms 23 Oct 2024 First Prev 241–320 of 335 Next Last