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%I #4 Jan 11 2018 08:22:24
%S 0,25,253,2197,33869,532282,7794251,117272307,1752542571,26390978567,
%T 396816511614,5963619560813,89689074440813,1348685504891460,
%U 20280052387506779,304959778790279486,4585803356289623686
%N Number of nX6 0..1 arrays with every element equal to 2, 3, 4 or 6 king-move adjacent elements, with upper left element zero.
%C Column 6 of A298070.
%H R. H. Hardin, <a href="/A298068/b298068.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=5
%e ..0..0..0..0..1..1. .0..0..0..0..1..1. .0..0..0..1..1..0. .0..1..1..0..0..0
%e ..0..1..1..0..0..1. .0..0..1..1..0..1. .0..1..0..1..0..0. .0..0..1..1..0..1
%e ..1..0..1..1..1..0. .0..1..0..1..0..1. .1..1..0..1..1..0. .0..1..0..0..1..1
%e ..1..1..0..0..0..1. .0..1..0..0..1..0. .1..1..0..1..0..1. .1..0..1..0..1..0
%e ..1..1..1..1..1..1. .0..0..1..1..0..0. .1..0..0..0..1..1. .1..1..1..0..0..0
%Y Cf. A298070.
%K nonn
%O 1,2
%A _R. H. Hardin_, Jan 11 2018
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