The Calendar hole will go live in approximately 13 days. 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 317th GolfingSuccess 🇬🇷 880 95 114ms 12 days ago 322nd sisyphus-ppcg 🇦🇺 879 63 7ms 4 Dec 2023 323rd MeWhenI 🇻🇦 879 97 65ms 1 Dec 2023 323rd Alex-x90 🇺🇸 879 97 62ms 11 May 2024 325th Shanethegamer 🇺🇸 878 75 2ms 1 Dec 2023 326th DialFrost 🇸🇬 878 97 3ms 10 Mar 2025 327th DialFrost 🇸🇬 877 51 3ms 1 Dec 2023 327th ovs-code 🇩🇪 877 51 5ms 1 Dec 2023 329th MeWhenI 🇻🇦 877 67 105ms 1 Dec 2023 330th lynn 877 83 131ms 19 Oct 2025 331st stefangimmillaro 877 110 257ms 29 Apr 2024 332nd canissimia 🇦🇶 877 112 4,961ms 29 Dec 2023 333rd canissimia 🇦🇶 877 188 3ms 31 Dec 2023 334th DialFrost 🇸🇬 876 83 4,728ms 24 Oct 2024 335th Shanethegamer 🇺🇸 875 66 9ms 1 Dec 2023 335th duckyluuk 🇳🇱 875 66 9ms 9 Oct 2024 337th DialFrost 🇸🇬 875 72 42ms 17 Oct 2024 338th ovs-code 🇩🇪 875 74 10ms 4 Jul 2024 339th Steffan153 🇫🇮 874 62 1ms 5 Dec 2023 339th DialFrost 🇸🇬 874 62 2ms 14 Dec 2023 339th ovs-code 🇩🇪 874 62 2ms 15 Dec 2023 339th sean-niemann 🇺🇸 874 62 2ms 28 Dec 2023 339th primo-ppcg 🇹🇭 874 62 2ms 25 Jan 2025 344th Shanethegamer 🇺🇸 874 82 26ms 1 Dec 2023 345th GrayJoKing 🇦🇺 873 50 146ms 1 Dec 2023 346th Steffan153 🇫🇮 873 62 128ms 18 Aug 2024 347th lifthrasiir 🇰🇷 873 143 9ms 19 Dec 2024 348th inventshah 872 74 4ms 1 Dec 2023 348th GolfingSuccess 🇬🇷 872 74 2ms 4 Dec 2023 350th sisyphus-ppcg 🇦🇺 871 58 9ms 4 Dec 2023 351st Shanethegamer 🇺🇸 871 87 438ms 25 Sep 2025 352nd edsrzf 🇳🇿 871 96 112ms 13 days ago 353rd DialFrost 🇸🇬 870 77 40ms 25 Apr 2025 354th MeWhenI 🇻🇦 870 93 424ms 1 Dec 2023 354th Shanethegamer 🇺🇸 870 93 404ms 1 Dec 2023 356th MeWhenI 🇻🇦 870 130 477ms 28 Mar 2025 356th emgordon154 870 130 457ms 28 Mar 2025 356th DialFrost 🇸🇬 870 130 471ms 28 Mar 2025 356th Shanethegamer 🇺🇸 870 130 505ms 9 Apr 2025 356th GolfingSuccess 🇬🇷 870 130 460ms 12 days ago 361st Shanethegamer 🇺🇸 869 111 250ms 1 Dec 2023 361st KasperKivimaeki 🇫🇮 869 111 254ms 8 Oct 2025 363rd m-tkach 🇺🇦 868 48 50ms 1 Dec 2023 364th emgordon154 867 63 8ms 16 Nov 2024 365th JayXon 🇺🇸 866 84 128ms 14 Jan 2024 366th DialFrost 🇸🇬 865 64 7ms 14 Dec 2023 366th ovs-code 🇩🇪 865 64 7ms 15 Dec 2023 366th sean-niemann 🇺🇸 865 64 6ms 28 Dec 2023 369th GrayJoKing 🇦🇺 864 83 27ms 4 Dec 2023 369th DialFrost 🇸🇬 864 83 28ms 25 Mar 2025 371st MeWhenI 🇻🇦 863 73 1,277ms 1 Dec 2023 371st DialFrost 🇸🇬 863 73 1,324ms 9 Mar 2025 373rd JayXon 🇺🇸 863 170 1,701ms 15 Sep 2025 374th stefangimmillaro 862 67 10ms 12 Sep 2024 375th GrayJoKing 🇦🇺 862 101 5ms 2 Dec 2023 375th DialFrost 🇸🇬 862 101 5ms 24 Dec 2023 377th primo-ppcg 🇹🇭 862 218 14ms 22 Apr 2025 378th GrayJoKing 🇦🇺 861 89 11ms 4 Dec 2023 379th HumanEquivalentUnit 860 49 641ms 5 Dec 2023 380th nwellnhof 🇩🇪 860 52 3ms 16 Oct 2024 381st MeWhenI 🇻🇦 860 75 2ms 1 Dec 2023 381st Alex-x90 🇺🇸 860 75 2ms 4 Dec 2023 383rd m-tkach 🇺🇦 860 99 3ms 3 Dec 2023 383rd edsrzf 🇳🇿 860 99 3ms 22 Feb 2025 385th sean-niemann 🇺🇸 859 63 127ms 4 Aug 2024 385th rucin93 🇵🇱 859 63 140ms 5 Jan 2025 387th DialFrost 🇸🇬 858 219 15ms 20 Apr 2025 388th sean-niemann 🇺🇸 857 73 122ms 3 Dec 2023 388th DialFrost 🇸🇬 857 73 126ms 3 Dec 2023 390th ovs-code 🇩🇪 856 51 155ms 29 Dec 2023 390th Natanaelel 🇸🇪 856 51 161ms 24 Jan 2025 392nd DialFrost 🇸🇬 856 59 7ms 17 Sep 2024 393rd ovs-code 🇩🇪 856 85 129ms 30 Jan 2024 394th jared-hughes 855 146 9ms 19 Dec 2024 395th ovs-code 🇩🇪 854 102 5ms 1 Dec 2023 395th edsrzf 🇳🇿 854 102 5ms 19 Nov 2025 397th Yewzir 🇧🇪 853 72 385ms 26 May 2024 398th edsrzf 🇳🇿 852 74 1,374ms 29 Apr 2025 399th emgordon154 852 100 5ms 22 May 2025 400th copy 851 34 3ms 25 Sep 2025 First Prev 321–400 of 1,484 Next Last