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 A133791 #26 Feb 16 2025 08:33:06
%S A133791 1,15,417,50625,24879489,48231228511,373654052856545,
%T A133791 11546079143118274625,1422756868491071266637985,
%U A133791 699232611373976058162941025423,1370556061582419558173913152072112161,10714096395475651010921722651799661109404545
%N A133791 Number of n X n binary matrices with every 1 adjacent to some 0 horizontally, vertically, diagonally or antidiagonally.
%C A133791 Number of dominating sets in the n X n king graph. - _Andrew Howroyd_, May 10 2017
%H A133791 Stephan Mertens, <a href="/A133791/b133791.txt">Table of n, a(n) for n = 1..22</a> (first 18 terms from Christian Sievers)
%H A133791 Stephan Mertens, <a href="https://arxiv.org/abs/2408.08053">Domination Polynomials of the Grid, the Cylinder, the Torus, and the King Graph</a>, arXiv:2408.08053 [math.CO], Aug 2024.
%H A133791 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/DominatingSet.html">Dominating Set</a>
%H A133791 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/KingGraph.html">King Graph</a>
%H A133791 Wikipedia, <a href="https://en.wikipedia.org/wiki/Dominating_set">Dominating set</a>
%t A133791 A218663 = Import["https://oeis.org/A218663/b218663.txt", "Table"][[All, 2]];
%t A133791 a[n_] := A218663[[2 n^2 - 2 n + 1]];
%t A133791 Table[a[n], {n, 1, 11}] (* _Jean-François Alcover_, Sep 23 2019 *)
%Y A133791 Main diagonal of A218663.
%Y A133791 Cf. A133515, A133556, A063443 (independent vertex sets).
%K A133791 nonn
%O A133791 1,2
%A A133791 _R. H. Hardin_, Jan 05 2008
%E A133791 a(12) and beyond from _Christian Sievers_, Dec 03 2023