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 A303378 #8 Feb 16 2025 08:33:54 %S A303378 1,2,2,2,2,2,2,2,2,2,3,2,2,2,3,4,3,2,2,3,4,4,4,3,4,3,4,4,4,4,4,4,4,4, %T A303378 4,4,5,4,4,4,5,4,4,4,5,6,5,4,6,6,6,6,4,5,6,6,6,5,6,7,8,7,6,5,6,6,6,6, %U A303378 6,6,8,8,8,8,6,6,6,6,7,6,6,8,9,8,9,8,9,8,6,6,7 %N A303378 Array read by antidiagonals: T(m,n) = total domination number of the m X n king graph. %H A303378 Andrew Howroyd, <a href="/A303378/b303378.txt">Table of n, a(n) for n = 1..496</a> %H A303378 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/KingGraph.html">King Graph</a> %H A303378 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/TotalDominatingSet.html">Total Dominating Set</a> %e A303378 Table begins: %e A303378 ======================================================= %e A303378 m\n| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 %e A303378 ---+--------------------------------------------------- %e A303378 1 | 1 2 2 2 3 4 4 4 5 6 6 6 7 8 8 8 ... %e A303378 2 | 2 2 2 2 3 4 4 4 5 6 6 6 7 8 8 8 ... %e A303378 3 | 2 2 2 2 3 4 4 4 5 6 6 6 7 8 8 8 ... %e A303378 4 | 2 2 2 4 4 4 6 6 6 8 8 8 10 10 10 12 ... %e A303378 5 | 3 3 3 4 5 6 7 8 9 10 11 12 13 14 15 16 ... %e A303378 6 | 4 4 4 4 6 8 8 8 10 12 12 12 14 16 16 16 ... %e A303378 7 | 4 4 4 6 7 8 9 10 11 12 14 14 16 17 18 19 ... %e A303378 8 | 4 4 4 6 8 8 10 12 12 14 16 16 18 20 20 22 ... %e A303378 9 | 5 5 5 6 9 10 11 12 15 16 17 18 21 22 23 24 ... %e A303378 ... %Y A303378 Main diagonal is A302401. %Y A303378 Cf. A300358, A303114, A303335. %K A303378 nonn,tabl %O A303378 1,2 %A A303378 _Andrew Howroyd_, Apr 22 2018