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%I #4 Dec 19 2017 13:16:35
%S 21,393,3493,44668,579857,6829945,84312938,1042553987,12735280455,
%T 156519553289,1923876392648,23611929410157,290021887978541,
%U 3562298803824671,43747148405059017,537296584934686222
%N Number of nX6 0..1 arrays with each 1 adjacent to 0, 2 or 4 king-move neighboring 1s.
%C Column 6 of A296725.
%H R. H. Hardin, <a href="/A296723/b296723.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=5
%e ..0..1..1..0..0..1. .0..1..0..1..0..0. .0..0..0..0..0..0. .0..0..0..0..0..1
%e ..0..1..0..0..1..1. .0..0..0..0..0..0. .0..0..0..1..1..0. .0..0..0..1..0..0
%e ..0..0..0..0..0..0. .0..1..0..1..0..1. .0..0..1..1..1..1. .0..0..1..1..0..0
%e ..0..0..1..1..1..1. .0..0..0..0..0..0. .0..0..0..0..0..0. .0..0..0..0..0..0
%e ..1..0..0..1..1..0. .0..0..1..0..1..0. .1..0..1..0..1..0. .0..1..0..0..1..0
%Y Cf. A296725.
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 19 2017
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