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 A291872 #6 Feb 16 2025 08:33:51 %S A291872 1,3,3,4,9,4,4,24,24,4,4,56,129,56,4,4,136,613,613,136,4,4,328,2997, %T A291872 5617,2997,328,4,4,792,14713,52955,52955,14713,792,4,4,1912,72169, %U A291872 502521,964755,502521,72169,1912,4,4,4616,353853,4763717,17625829,17625829,4763717,353853,4616,4 %N A291872 Array read by antidiagonals: T(m,n) = number of connected dominating sets in the grid graph P_m X P_n. %H A291872 Andrew Howroyd, <a href="/A291872/b291872.txt">Table of n, a(n) for n = 1..435</a> %H A291872 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/ConnectedDominatingSet.html">Connected Dominating Set</a> %H A291872 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/GridGraph.html">Grid Graph</a> %e A291872 Array begins: %e A291872 =============================================================== %e A291872 m\n| 1 2 3 4 5 6 7 %e A291872 ---|----------------------------------------------------------- %e A291872 1 | 1 3 4 4 4 4 4... %e A291872 2 | 3 9 24 56 136 328 792... %e A291872 3 | 4 24 129 613 2997 14713 72169... %e A291872 4 | 4 56 613 5617 52955 502521 4763717... %e A291872 5 | 4 136 2997 52955 964755 17625829 321381919... %e A291872 6 | 4 328 14713 502521 17625829 617429805 21550989109... %e A291872 7 | 4 792 72169 4763717 321381919 21550989109 1436456861467... %e A291872 ... %Y A291872 Row 2 is A291706. %Y A291872 Main diagonal is A287690. %Y A291872 Cf. A218354 (dominating), A287151 (connected). %Y A291872 Cf. A291873 (king). %K A291872 nonn,tabl %O A291872 1,2 %A A291872 _Andrew Howroyd_, Sep 04 2017