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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 Nim 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 Nim 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 199th Ripick 797 64 406ms 30 Apr 2023 199th usernamethatisnttaken 797 64 404ms 6 Sep 2023 199th Mikey-Beep 🇬🇧 797 64 412ms 24 Jul 2025 204th Andre3582 785 65 409ms 21 Nov 2021 204th enbyte 785 65 380ms 21 Nov 2021 204th MLPdiscord 785 65 358ms 6 Jan 2022 204th Nickmiste 785 65 387ms 13 Nov 2022 204th mqyhlkahu 785 65 363ms 10 Sep 2023 204th trinityy-7 785 65 412ms 6 Mar 2024 204th msbranicky 785 65 388ms 3 Jul 2024 211th aaronze 🇦🇺 773 66 374ms 21 Nov 2021 211th elephantpanda 773 66 372ms 26 Aug 2022 211th eshilo-draper 773 66 382ms 5 Oct 2022 211th heanyang1 773 66 408ms 22 Apr 2025 211th jacekwladzinski 773 66 395ms 2 Oct 2025 211th dpethes 773 66 422ms 10 Dec 2025 217th TheMickeyMouse 761 67 449ms 21 Nov 2021 217th aDwarfNamedUrist 761 67 390ms 21 Nov 2022 217th glatzert 761 67 414ms 12 May 2023 217th Sciman101 761 67 378ms 15 May 2023 217th eiburns 761 67 407ms 7 Sep 2023 217th rollershutter 761 67 461ms 29 Jan 2025 217th kevinnaviapaiva 761 67 394ms 19 Feb 2025 224th jcheritat 750 68 368ms 21 Nov 2021 224th PhonicCanine 750 68 388ms 21 Nov 2021 224th Gpopcorn 750 68 365ms 31 Mar 2022 224th Mortis66666 750 68 386ms 27 May 2022 224th 104210 750 68 356ms 12 Sep 2022 224th Pyro569 750 68 396ms 31 Jul 2023 230th martinnorling 🇸🇪 739 69 375ms 15 Feb 2022 230th PyryL 🇫🇮 739 69 362ms 23 Aug 2024 230th Flix7dev 🇧🇪 739 69 363ms 21 Oct 2025 233rd Skellybob56 729 70 426ms 10 Nov 2025 234th Cbrt74088 718 71 356ms 21 Nov 2021 234th MrGraduate 718 71 364ms 21 Nov 2021 234th ccolella-mdc 718 71 351ms 12 Oct 2023 234th Zach1031 718 71 410ms 21 days ago 238th charliegaming 708 72 376ms 3 Oct 2023 238th jtaxen 708 72 351ms 30 Mar 2024 238th JarrodCope 708 72 387ms 19 Apr 2024 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 9 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 First Prev 201–300 of 335 Next Last