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%I #11 Aug 20 2017 09:57:22
%S 2,16,150,5771,270411,51462132
%N Number of irredundant sets in the n X n knight graph.
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/IrredundantSet.html">Irredundant Set</a>
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/KnightGraph.html">Knight Graph</a>
%Y Cf. A286882, A287071, A291099.
%K nonn,more
%O 1,1
%A _Eric W. Weisstein_, Aug 10 2017
%E a(5)-a(6) from _Andrew Howroyd_, Aug 19 2017