The Calendar hole will go live in approximately 6 days. Why not try and solve it ahead of time?
Recamán in Ruby 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 1st GrayJoKing 🇦🇺 1,000 42 35ms 23 Apr 2021 2nd sisyphus-ppcg 🇦🇺 955 44 39ms 27 Dec 2020 2nd Lydxn 🇨🇦 955 44 38ms 15 May 2021 2nd MeWhenI 🇻🇦 955 44 38ms 31 Mar 2022 2nd stefangimmillaro 955 44 38ms 6 May 2023 2nd Steffan153 🇫🇮 955 44 36ms 24 Jun 2024 2nd sean-niemann 🇺🇸 955 44 43ms 11 Mar 2025 8th nwellnhof 🇩🇪 933 45 36ms 27 Dec 2020 8th janlelis 933 45 41ms 11 Jan 2021 8th DialFrost 🇸🇬 933 45 38ms 24 Jun 2024 8th JayXon 🇺🇸 933 45 45ms 24 Jun 2024 12th primo-ppcg 🇹🇭 913 46 39ms 29 Dec 2020 13th ovs-code 🇩🇪 894 47 76ms 24 Jun 2024 13th Andriamanitra 🇫🇮 894 47 37ms 28 Feb 2025 15th prplz 🇦🇺 875 48 40ms 27 Dec 2020 15th Natanaelel 🇸🇪 875 48 43ms 28 Feb 2023 15th pardouin 🇫🇷 875 48 37ms 9 Aug 2025 18th SirBogman 🇺🇸 857 49 38ms 28 Dec 2020 18th gilufin 857 49 39ms 8 Aug 2021 18th m-tkach 🇺🇦 857 49 37ms 14 Feb 2023 18th olleicua 🇺🇸 857 49 38ms 20 Jan 2024 22nd Shanethegamer 🇺🇸 840 50 37ms 11 May 2021 22nd olivermrose 🇺🇸 840 50 39ms 21 Sep 2021 22nd akshatj27 🇦🇶 840 50 49ms 11 Jan 2022 25th Waffle3z 824 51 37ms 7 Jan 2021 25th emgordon154 824 51 36ms 15 Nov 2024 27th codereport 🇨🇦 808 52 45ms 21 Apr 2025 28th jared-hughes 792 53 39ms 10 Sep 2022 29th OhmNomNom 778 54 37ms 16 Oct 2022 30th yzhs 🇩🇪 750 56 41ms 20 Jul 2022 31st hiddicop 🇸🇪 737 57 39ms 30 Jan 2021 31st anter69 🇭🇺 737 57 41ms 31 Jan 2022 31st aydamak 737 57 38ms 17 May 2024 31st blaztoma 🇱🇹 737 57 35ms 12 Oct 2025 31st snoozingnewt 🇨🇦 737 57 39ms 14 Oct 2025 36th annaproxy 712 59 37ms 27 Aug 2022 36th Lv0Sys 🇵🇱 712 59 37ms 20 days ago 38th KatieLG 🇬🇧 700 60 36ms 9 May 2021 39th TheZwierzLF 🇵🇱 689 61 38ms 9 days ago 40th tatzyr 🇯🇵 677 62 34ms 17 Nov 2024 41st csharpython 667 63 33ms 24 Aug 2025 42nd AlephSquirrel 646 65 41ms 7 Mar 2023 43rd BREMAUCY 🇫🇷 636 66 40ms 30 Apr 2024 44th AIn0n 600 70 41ms 2 Dec 2021 44th dokutan 600 70 40ms 30 Mar 2025 46th PikeIt 583 72 36ms 14 Jun 2023 47th adoxography 575 73 36ms 7 Jan 2021 48th HumanoidCPU 553 76 42ms 20 Jun 2024 49th msbranicky 438 96 35ms 11 Sep 2023 50th LostSyntax21 🇬🇧 412 102 36ms 22 Sep 2024 51st DaCuteRaccoon 309 136 38ms 1 May 2022 52nd stordev 300 140 45ms 26 Feb 2021 53rd JRaspass 🇬🇧 47 902 35ms 26 Dec 2020 53rd KatieLG-Transpiler 🇬🇧 47 902 38ms 24 Jun 2022 53rd retrohun 47 902 37ms 28 Dec 2022 53rd Haksell 🇦🇶 47 902 38ms 23 Feb 2023 53rd Mabeloid 🇳🇴 47 902 35ms 3 Oct 2024 53rd CaedenHarper 🇨🇦 47 902 35ms 16 Aug 2025 1–58 of 58