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 A286881 #20 Feb 16 2025 08:33:45 %S A286881 1,4,12,256,971,85405,1997448,360584008,34097946429,16133593980207, %T A286881 8445394800836595,9548578220258420637 %N A286881 Number of minimal dominating sets in the n X n king graph. %H A286881 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/KingGraph.html">King Graph</a> %H A286881 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/MinimalDominatingSet.html">Minimal Dominating Set</a> %Y A286881 Main diagonal of A286849. %Y A286881 Cf. A133791 (dominating sets), A286871 (irredundant sets). %Y A286881 Cf. A290382 (grid graph). %K A286881 nonn,more %O A286881 1,2 %A A286881 _Eric W. Weisstein_, Aug 02 2017 %E A286881 a(5)-a(9) from _Andrew Howroyd_, Aug 03 2017 %E A286881 a(10)-a(12) from _Christian Sievers_, Dec 01 2023