The Calendar hole will go live in approximately 14 hours. Why not try and solve it ahead of time?
Farey Sequence in all languages 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 238th sean-niemann 🇺🇸 894 89 87ms 26 Apr 2025 238th albanian-laundromat 894 89 80ms 9 Nov 2025 243rd emplv 🇱🇻 894 108 260ms 1 Dec 2023 243rd MeWhenI 🇻🇦 894 108 274ms 1 Dec 2023 243rd DialFrost 🇸🇬 894 108 264ms 3 Dec 2023 243rd sean-niemann 🇺🇸 894 108 260ms 4 Dec 2023 247th xsot 🇸🇬 893 62 4ms 7 Apr 2024 248th primo-ppcg 🇹🇭 893 75 39ms 23 Jan 2025 249th CLOStrophobic 🇮🇹 892 80 18ms 25 Jan 2025 249th edsrzf 🇳🇿 892 80 19ms 15 Feb 2025 251st JayXon 🇺🇸 892 89 3ms 10 Nov 2024 252nd DialFrost 🇸🇬 891 90 116ms 4 Apr 2025 252nd emgordon154 891 90 118ms 18 Apr 2025 252nd ovs-code 🇩🇪 891 90 125ms 20 Apr 2025 252nd sean-niemann 🇺🇸 891 90 127ms 4 Jun 2025 252nd lynn 891 90 123ms 6 Nov 2025 257th MarcMush 🇫🇷 890 56 896ms 24 Dec 2023 257th DialFrost 🇸🇬 890 56 957ms 26 Feb 2024 257th ovs-code 🇩🇪 890 56 837ms 10 May 2024 260th sean-niemann 🇺🇸 890 66 112ms 4 Dec 2023 261st SirBogman 🇺🇸 890 69 397ms 15 Jan 2024 261st Shanethegamer 🇺🇸 890 69 375ms 16 Jan 2024 261st duckyluuk 🇳🇱 890 69 487ms 13 Jun 2024 261st emgordon154 890 69 398ms 18 Apr 2025 261st CaedenHarper 🇨🇦 890 69 439ms 30 Jul 2025 261st albanian-laundromat 890 69 426ms 1 Oct 2025 261st snoozingnewt 🇨🇦 890 69 398ms 15 Oct 2025 268th Shanethegamer 🇺🇸 890 79 82ms 1 Dec 2023 268th MeWhenI 🇻🇦 890 79 83ms 1 Dec 2023 268th stefangimmillaro 890 79 82ms 28 Apr 2024 271st MeWhenI 🇻🇦 889 74 2ms 1 Dec 2023 271st ovs-code 🇩🇪 889 74 2ms 1 Dec 2023 271st GrayJoKing 🇦🇺 889 74 2ms 2 Dec 2023 271st DialFrost 🇸🇬 889 74 2ms 3 Dec 2023 271st sean-niemann 🇺🇸 889 74 2ms 4 Dec 2023 271st FlyingPenguin223 889 74 3ms 4 Dec 2023 271st edsrzf 🇳🇿 889 74 2ms 25 Apr 2025 271st GolfingSuccess 🇬🇷 889 74 3ms 20 Nov 2025 279th Shanethegamer 🇺🇸 889 84 4ms 1 Dec 2023 279th primo-ppcg 🇹🇭 889 84 4ms 25 Jan 2025 279th kg583 🇺🇸 889 84 4ms 7 Nov 2025 282nd xsot 🇸🇬 889 98 5ms 8 Feb 2024 283rd sgiandomenico 888 65 9ms 18 Dec 2023 284th sean-niemann 🇺🇸 888 71 41ms 3 Dec 2023 284th JayXon 🇺🇸 888 71 1,303ms 6 Dec 2023 284th DialFrost 🇸🇬 888 71 41ms 28 hours ago 287th inventshah 888 96 60ms 1 Dec 2023 288th emplv 🇱🇻 888 107 25ms 1 Dec 2023 288th sean-niemann 🇺🇸 888 107 25ms 4 Dec 2023 288th m-tkach 🇺🇦 888 107 24ms 5 Dec 2023 288th DialFrost 🇸🇬 888 107 25ms 7 Dec 2023 288th JayXon 🇺🇸 888 107 24ms 7 Dec 2023 288th Steffan153 🇫🇮 888 107 25ms 19 Aug 2024 294th emplv 🇱🇻 887 61 128ms 29 Oct 2024 295th IanUtley 887 73 10ms 1 Dec 2023 296th emgordon154 887 82 3,531ms 3 Jul 2025 296th JayXon 🇺🇸 887 82 2,982ms 3 Jul 2025 298th UnderKoen 🇳🇱 887 96 5ms 12 Mar 2025 299th duckyluuk 🇳🇱 886 82 154ms 25 Dec 2024 299th MeWhenI 🇻🇦 886 82 14ms 30 Dec 2024 299th GolfingSuccess 🇬🇷 886 82 11ms 13 Jan 2025 299th GrayJoKing 🇦🇺 886 82 15ms 3 Feb 2025 303rd AlephSquirrel 885 26 51ms 27 Dec 2023 304th edsrzf 🇳🇿 885 109 280ms 30 Dec 2024 304th CaedenHarper 🇨🇦 885 109 251ms 20 Nov 2025 304th albanian-laundromat 885 109 246ms 3 Dec 2025 307th MeWhenI 🇻🇦 883 68 11ms 1 Dec 2023 308th programjames 883 72 11ms 24 Dec 2023 309th MeWhenI 🇻🇦 883 81 42ms 13 Feb 2025 310th sean-niemann 🇺🇸 882 63 975ms 24 Mar 2024 310th DialFrost 🇸🇬 882 63 933ms 18 Dec 2024 312th sean-niemann 🇺🇸 882 90 5ms 13 Jan 2025 312th DialFrost 🇸🇬 882 90 3ms 31 Mar 2025 314th GrayJoKing 🇦🇺 881 71 126ms 2 Dec 2023 315th DialFrost 🇸🇬 881 80 17ms 26 Feb 2025 316th MeWhenI 🇻🇦 881 86 428ms 7 Nov 2025 316th namelessiw 881 86 382ms 15 Nov 2025 318th AlephSquirrel 881 87 9ms 5 Aug 2024 319th emgordon154 880 95 111ms 27 Nov 2025 319th DialFrost 🇸🇬 880 95 115ms 27 Nov 2025 First Prev 241–320 of 1,485 Next Last