The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Van Eck Sequence in Python 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 241st j-Ewan 596 94 22ms 1 Mar 2022 241st CatsAreFluffy 596 94 25ms 8 Feb 2023 241st AbhilashaTandon 596 94 11ms 28 Feb 2023 241st briankuder 596 94 12ms 31 May 2023 245th RDShah 589 95 39ms 25 Nov 2021 245th inverseLorentz 🇦🇺 589 95 16ms 10 Jul 2022 245th Ripick 589 95 14ms 30 Dec 2022 245th fynnkroeger 589 95 16ms 6 Jan 2023 245th jmerle 🇳🇱 589 95 66ms 16 Feb 2023 245th brimstonetrader 589 95 16ms 22 Jan 2024 251st RKlazinga 583 96 16ms 14 Aug 2021 251st Irratix 🇳🇱 583 96 39ms 28 Apr 2022 251st randolchance 583 96 30ms 9 Feb 2023 251st jmmographer 583 96 17ms 11 Nov 2023 255th smartiel 577 97 54ms 19 Sep 2022 255th qwjhvbxi 577 97 14ms 8 Feb 2024 257th ehulinsky 🇺🇸 571 98 47ms 15 Nov 2021 257th 0dyse 571 98 11ms 6 May 2025 257th damoose717 571 98 15ms 23 May 2025 260th forlack 560 100 17ms 10 Nov 2021 260th midnattssol 🇸🇪 560 100 14ms 19 May 2022 262nd WillowWispy 554 101 16ms 19 Mar 2025 263rd janga1 549 102 22ms 26 Aug 2021 263rd cafehaine 🇫🇷 549 102 16ms 24 May 2022 265th mothcolada 🇺🇸 544 103 23ms 25 May 2021 265th AIn0n 544 103 86ms 27 Oct 2021 265th adamnielson42 🇺🇸 544 103 16ms 8 Nov 2023 268th mbittner20 538 104 18ms 27 May 2023 269th EvanDarwin 533 105 17ms 23 Aug 2021 269th Pena86 533 105 16ms 2 Jan 2022 269th karhuthebear 533 105 15ms 9 May 2022 269th Demonarchet 533 105 11ms 18 Apr 2023 269th DrPrettyman 533 105 14ms 31 May 2023 269th abhishekg999 533 105 14ms 20 Sep 2024 275th galloj 🇨🇿 528 106 44ms 30 Aug 2022 275th DGipe 528 106 16ms 1 Jul 2024 277th alexjurkiewicz 🇦🇺 523 107 14ms 7 Nov 2023 277th keelimeguy 🇺🇸 523 107 1,988ms 19 Dec 2023 279th kevdah 519 108 19ms 7 Jul 2022 279th jameswmccarty 519 108 18ms 23 Feb 2025 281st jiaminglimjm 🇲🇾 514 109 14ms 5 Jul 2024 282nd hjcafaroUC 509 110 28ms 28 May 2021 283rd bwenstar 505 111 18ms 12 Aug 2022 283rd cingulataluke 505 111 14ms 29 Aug 2023 285th NoahBolohan 🇨🇦 500 112 13ms 26 Jun 2024 286th 40fied4t 496 113 907ms 16 May 2025 287th twocatsinatrenchcoat 491 114 15ms 11 May 2022 288th raketexyz 487 115 21ms 18 Dec 2021 288th eddvrs 487 115 33ms 20 Aug 2022 288th kellantech 487 115 126ms 20 May 2023 291st yoyoyonono 483 116 25ms 12 Apr 2022 292nd kenny14231 479 117 20ms 11 Jul 2022 292nd kzheng808 479 117 11ms 31 May 2023 294th andrewgopher 475 118 16ms 25 Jun 2022 294th LukasFolwarczny 🇨🇿 475 118 16ms 16 Sep 2022 296th try-except-try-accept 🇹🇭 471 119 21ms 5 Jul 2022 297th abrn 467 120 11ms 30 Jul 2022 298th Thestralos 459 122 13ms 2 Mar 2023 299th KWall1202 455 123 17ms 9 Feb 2022 299th kevinnaviapaiva 455 123 11ms 15 Feb 2025 301st shibacho 🇯🇵 427 131 17ms 24 Mar 2022 302nd mhenion8293 🇺🇸 424 132 30ms 23 Jan 2022 302nd KingSkyrock 🇺🇸 424 132 21ms 24 Apr 2022 302nd Yewzir 🇧🇪 424 132 29ms 7 Apr 2023 305th Trunksistor 🇫🇷 412 136 33ms 25 May 2022 306th ridingqwerty 🇺🇸 409 137 26ms 21 Dec 2023 307th aglahir1 406 138 18ms 5 Nov 2021 307th r-benson 🇬🇧 406 138 18ms 1 Feb 2023 309th joe0400 386 145 18ms 7 Sep 2021 310th Joe0400Student 384 146 17ms 2 Nov 2021 311th dgambit 371 151 44ms 2 Aug 2021 312th Matherubik1 361 155 21ms 22 Jul 2021 313th atazzam 🇺🇸 359 156 16ms 4 Apr 2022 314th 4ndyJ 🇬🇧 352 159 17ms 6 Mar 2023 315th dylanjones92 346 162 17ms 29 Jan 2024 316th landyrisbad 341 164 17ms 13 Nov 2022 317th vodker1 339 165 34ms 10 Mar 2022 317th dillon-duncando 339 165 52ms 4 Oct 2022 317th tails618 339 165 14ms 22 Aug 2023 320th shinylego 337 166 41ms 13 Nov 2022 First Prev 241–320 of 331 Next Last
