Collatz in Python in chars. 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 Calendar 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 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 ArkScript 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 ArkScript 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 Calendar 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 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 Chars Time Submitted 195th Lv0Sys 🇵🇱 781 73 23ms 7 Dec 2025 195th zacharysfrazee 781 73 19ms 7 hours ago 243rd TobyBoyne 🇬🇧 770 74 22ms 4 May 2022 243rd RDShah 770 74 18ms 6 May 2022 243rd Indivicivet 770 74 19ms 9 May 2022 243rd CedricGebistorf 770 74 17ms 9 May 2022 243rd ophact 770 74 21ms 11 May 2022 243rd ImpressedByRocks 770 74 18ms 17 May 2022 243rd LHuitre 770 74 18ms 2 Jun 2022 243rd neihousaigaai 770 74 17ms 8 Jun 2022 243rd rowboat1 770 74 18ms 10 Jun 2022 243rd inverseLorentz 🇦🇺 770 74 18ms 13 Jun 2022 243rd clementblaudeau 770 74 22ms 29 Jun 2022 243rd adoxography 770 74 19ms 13 Jul 2022 243rd Attero 🇸🇪 770 74 19ms 20 Jul 2022 243rd Heathcorp 🇦🇺 770 74 18ms 27 Jul 2022 243rd jfallon1997 770 74 18ms 11 Aug 2022 243rd VictorFordham 770 74 24ms 26 Aug 2022 243rd georgehulme 770 74 21ms 1 Sep 2022 243rd smartiel 770 74 18ms 15 Sep 2022 243rd trist224 🇫🇷 770 74 18ms 21 Sep 2022 243rd Kloppermand 🇩🇰 770 74 20ms 7 Oct 2022 243rd knutae 🇳🇴 770 74 18ms 9 Oct 2022 243rd Troon 770 74 19ms 14 Oct 2022 243rd MaxElf999 770 74 20ms 14 Oct 2022 243rd SniperSmiley 🇺🇸 770 74 18ms 6 Dec 2022 243rd elephantpanda 770 74 23ms 10 Dec 2022 243rd ArthurBond 770 74 18ms 19 Dec 2022 243rd Larspolo 770 74 18ms 25 Dec 2022 243rd dcc5480 770 74 20ms 12 Jan 2023 243rd Ripick 770 74 19ms 1 Feb 2023 243rd m3nt0ras 🇬🇷 770 74 18ms 3 Feb 2023 243rd Skwerl23 770 74 20ms 5 Feb 2023 243rd frankgraziano 770 74 18ms 19 Feb 2023 243rd KenanHanke 770 74 19ms 21 Feb 2023 243rd DanielPeterssonAI 770 74 19ms 13 Mar 2023 243rd jiaminglimjm 🇲🇾 770 74 18ms 20 Mar 2023 243rd ejini6969 770 74 19ms 22 Mar 2023 243rd GulgDev 770 74 18ms 22 Mar 2023 243rd vrnprkh 770 74 19ms 30 Mar 2023 243rd RuyiLi 770 74 18ms 1 Apr 2023 243rd StardustGogeta 770 74 18ms 7 May 2023 243rd zbreit 🇺🇸 770 74 19ms 7 May 2023 243rd kyleclaassen 770 74 19ms 20 May 2023 243rd mbittner20 770 74 19ms 27 May 2023 243rd tweska 🇳🇱 770 74 18ms 5 Jun 2023 243rd cros107 🇦🇺 770 74 18ms 11 Aug 2023 243rd yourlefthandman 770 74 18ms 16 Aug 2023 243rd daisyyedda 770 74 21ms 17 Aug 2023 243rd cesarm4 770 74 18ms 29 Aug 2023 243rd midnattssol 🇸🇪 770 74 18ms 22 Sep 2023 243rd lambda-abstraction 770 74 20ms 21 Oct 2023 243rd levavft 770 74 18ms 26 Oct 2023 243rd Buecherfresser 770 74 19ms 22 Nov 2023 243rd anarconic 770 74 51ms 8 Dec 2023 243rd azure-blondon 770 74 18ms 11 Dec 2023 243rd kurkale6ka 770 74 20ms 20 Dec 2023 243rd Anonymousellama21 770 74 20ms 14 Mar 2024 243rd Bmrl7 770 74 19ms 23 Mar 2024 243rd cefqrn 770 74 19ms 26 May 2024 243rd drochom 770 74 18ms 18 Jun 2024 243rd hiichbindermax 770 74 18ms 22 Jun 2024 243rd madex 🇩🇪 770 74 18ms 9 Jul 2024 243rd cykim8811 770 74 46ms 11 Jul 2024 243rd imelxr 🇮🇱 770 74 30ms 17 Aug 2024 243rd EnTerr 770 74 21ms 25 Aug 2024 243rd Mabeloid 🇳🇴 770 74 18ms 1 Sep 2024 243rd madeforlosers 770 74 19ms 5 Sep 2024 243rd LostSyntax21 🇬🇧 770 74 20ms 10 Sep 2024 243rd Deedogg 770 74 19ms 11 Sep 2024 243rd MassimoParisi 770 74 18ms 18 Sep 2024 243rd agreegious 770 74 20ms 17 Nov 2024 243rd Stockoh 🇫🇷 770 74 24ms 17 Nov 2024 243rd Andrey135296 770 74 20ms 24 Nov 2024 243rd TralfamadorianComedian 770 74 18ms 6 Dec 2024 243rd bltnppcnt 770 74 32ms 3 Jan 2025 243rd ZorblaxV 770 74 18ms 12 Jan 2025 243rd yokasuretsu 770 74 19ms 13 Jan 2025 243rd gdpr777 770 74 31ms 10 Feb 2025 243rd Pyroan 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