Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).
%I #35 Sep 16 2021 01:55:27
%S 2,2,4,5,8,9,12,15,18,21,24,29,32,38,43,48,53,60,66,72,79
%N Total domination number of the n X n king graph.
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/KingGraph.html">King Graph</a>
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/TotalDominationNumber.html">Total Domination Number</a>
%H Eric W. Weisstein, <a href="/A302401/a302401.png">Example minimum total domination configurations for n X n king graphs</a>
%F a(n) ~ n^2/7. - _Andrew Howroyd_, Apr 22 2018
%Y Main diagonal of A303378.
%Y Cf. A303156.
%K nonn,more
%O 2,1
%A _Eric W. Weisstein_, Apr 07 2018
%E a(17)-a(18) from _Andrew Howroyd_, Apr 22 2018
%E a(19)-a(20) from _Eric W. Weisstein_, Sep 09 2021
%E a(21) from _Eric W. Weisstein_, Sep 12 2021
%E a(22) from _Eric W. Weisstein_, Sep 15 2021