The Calendar hole will go live in approximately 8 days. Why not try and solve it ahead of time?
Van Eck 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 881st aksyristos 592 75 101ms 28 Dec 2022 882nd emgordon154 591 86 27ms 28 Dec 2024 883rd pandapawskat 589 101 3ms 26 Aug 2021 883rd User2654 589 101 2ms 12 Mar 2023 885th MathieuIko 588 92 41ms 21 Feb 2022 885th SniperSmiley 🇺🇸 588 92 16ms 21 Jun 2022 885th Vaekor 588 92 15ms 28 Jul 2023 885th eiburns 588 92 13ms 27 Oct 2023 889th JGDoerrer 587 134 531ms 3 Jan 2022 890th c0d3-4-F00d 🇩🇪 585 70 21ms 27 May 2021 891st Andrey135296 584 124 330ms 3 Jan 2022 891st snoozingnewt 🇨🇦 584 124 377ms 13 Oct 2025 893rd msbranicky 584 163 260ms 16 Sep 2023 894th KenanSi 583 35 3ms 22 Feb 2022 895th c0d3-4-F00d 🇩🇪 583 102 2ms 5 Dec 2021 896th Yewzir 🇧🇪 582 91 97ms 27 Mar 2024 897th jtaxen 582 93 23ms 5 Apr 2024 897th PyryL 🇫🇮 582 93 16ms 23 Aug 2024 897th Andrey2001 582 93 45ms 13 days ago 900th prplz 🇦🇺 582 133 385ms 11 May 2021 901st bac0id 582 135 68ms 23 Feb 2024 902nd MarcMush 🇫🇷 581 76 956ms 11 Jul 2021 903rd Ripick 581 90 129ms 19 Aug 2025 904th j-Ewan 581 164 293ms 23 Mar 2022 905th Re-Adventures 🇮🇳 579 135 153ms 5 Jan 2023 906th warmCabin 578 103 2ms 7 Nov 2023 907th janbehrens 🇩🇪 578 134 409ms 21 Nov 2022 908th targrik 577 71 10ms 29 Jul 2025 909th Shanethegamer 🇺🇸 577 145 25ms 13 Jul 2021 910th akshatj27 🇦🇶 577 165 275ms 11 Jan 2022 910th 0xjac 🇨🇭 577 165 292ms 9 Jun 2025 912th j-Ewan 576 94 22ms 1 Mar 2022 912th CatsAreFluffy 576 94 25ms 8 Feb 2023 912th AbhilashaTandon 576 94 11ms 28 Feb 2023 912th briankuder 576 94 12ms 31 May 2023 916th TheZwierzLF 🇵🇱 575 64 33ms 5 days ago 917th snoozingnewt 🇨🇦 574 99 2ms 13 Oct 2025 918th MeWhenI 🇻🇦 573 54 3ms 16 Apr 2023 919th Shanethegamer 🇺🇸 573 77 458ms 2 Sep 2021 920th Mabeloid 🇳🇴 573 84 482ms 6 Oct 2024 920th dokutan 573 84 461ms 9 Feb 2025 922nd yoshykai 573 135 429ms 31 Mar 2025 923rd cbrt-x 572 94 120ms 20 Jan 2025 924th weliveinhell 🇭🇹 572 104 3ms 3 Oct 2023 925th jhonw 570 42 34ms 23 Sep 2023 926th RDShah 570 95 39ms 25 Nov 2021 926th inverseLorentz 🇦🇺 570 95 16ms 10 Jul 2022 926th Ripick 570 95 14ms 30 Dec 2022 926th fynnkroeger 570 95 16ms 6 Jan 2023 926th jmerle 🇳🇱 570 95 66ms 16 Feb 2023 926th brimstonetrader 570 95 16ms 22 Jan 2024 932nd wiebecommajonas 570 137 128ms 20 Nov 2021 933rd SpareManiKatti 569 72 10ms 10 Sep 2021 933rd CatsAreFluffy 569 72 10ms 16 Dec 2022 935th MeWhenI 🇻🇦 568 100 2ms 15 Sep 2022 936th RKlazinga 564 96 16ms 14 Aug 2021 936th Irratix 🇳🇱 564 96 39ms 28 Apr 2022 936th randolchance 564 96 30ms 9 Feb 2023 936th jmmographer 564 96 17ms 11 Nov 2023 940th MeWhenI 🇻🇦 562 79 90ms 12 Dec 2022 941st Shotokhan 562 140 2,825ms 2 Oct 2025 942nd snoozingnewt 🇨🇦 562 149 26ms 13 Oct 2025 943rd btjones0 561 64 14ms 20 May 2021 944th JOrE20 🇺🇸 561 73 10ms 5 Nov 2025 945th Jacob385 561 138 606ms 28 Oct 2025 946th Shanethegamer 🇺🇸 560 82 16ms 8 Sep 2021 947th smartiel 558 97 54ms 19 Sep 2022 947th qwjhvbxi 558 97 14ms 8 Feb 2024 949th cure-honey 🇯🇵 558 110 97ms 11 Jul 2021 950th trinityy-7 554 74 10ms 6 Feb 2024 951st roavin 553 131 371ms 23 Jun 2022 952nd HumanoidCPU 553 140 425ms 8 Nov 2025 953rd scpchicken 🇵🇼 552 56 26ms 17 Dec 2022 954th emgordon154 552 68 129ms 4 Aug 2024 955th ehulinsky 🇺🇸 552 98 47ms 15 Nov 2021 955th 0dyse 552 98 11ms 6 May 2025 955th damoose717 552 98 15ms 23 May 2025 958th Chinay-Domitrix 🇺🇸 552 117 2,723ms 2 Apr 2025 959th ashtraypettingzoo 🇺🇸 551 37 3ms 5 Apr 2023 960th targrik 550 66 80ms 29 Jul 2025 First Prev 881–960 of 1,806 Next Last