This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A364480 #41 Feb 14 2024 13:56:27 %S A364480 1,2,2,3,3,3,4,4,4,4,5,5,1,5,5,6,6,6,6,6,6,7,7,7,7,7,7,7,8,8,8,8,8,8, %T A364480 8,8,9,9,9,9,1,9,9,9,9,10,10,10,10,2,2,10,10,10,10,11,11,11,11,3,3,3, %U A364480 11,11,11,11,12,12,12,12,12,12,12,12,12,12,12,12 %N A364480 Table of Sprague-Grundy values for M X N Pop-It! hooks read by antidiagonals. %C A364480 Pop-It! is played on an M X N lattice graph with a "pip" at each node. A move consists of popping any number of pips that are all collinear on the same horizontal or vertical line. A hook h(a,b) is defined as two lines of lengths a and b connected by a corner pip. The total number of pips of a hook h(a,b) is a+b+1. %C A364480 This table seems to have similarities to A354586. %H A364480 Ryan J. Blau, <a href="/A364480/a364480.png">Colored pattern of hook Sprague-Grundy values</a>. %H A364480 Ryan J. Blau, <a href="/A364480/a364480.py.txt">Python Code</a>. %e A364480 Table begins %e A364480 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, ... %e A364480 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, ... %e A364480 3, 4, 1, 6, 7, 8, 9, 10, 11, 12, 13, ... %e A364480 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, ... %e A364480 5, 6, 7, 8, 1, 2, 3, 12, 13, ... %e A364480 6, 7, 8, 9, 2, 3, 12, 13, ... %e A364480 7, 8, 9, 10, 3, 12, 1, ... %e A364480 8, 9, 10, 11, 12, 13, ... %e A364480 9, 10, 11, 12, 13, ... %e A364480 10, 11, 12, 13, ... %e A364480 11, 12, 13, ... %e A364480 12, 13, ... %e A364480 13, ... %e A364480 ... %Y A364480 Sprague-Grundy values for Toppling Dominoes L's: A354586. %Y A364480 Cf. A038712 (main diagonal). %K A364480 nonn,tabl,look %O A364480 1,2 %A A364480 _Ryan J. Blau_, _Michael Carrion_, _Djeneba Diop_, _Sarah Dumnich_, _Matt Prudente_, and _Nathan B. Shank_, Jul 26 2023