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%I A304550 #6 Jan 20 2024 16:33:48
%S A304550 1,908,2822,72713,1061345,16063367,274090332,4486557450,72881502770,
%T A304550 1210303857062,19895930906948,327540952049656,5404014762291029,
%U A304550 89033985729142356,1467427990298534936,24190936987126912330
%N A304550 Number of n X 7 0..1 arrays with every element unequal to 0, 2, 3, 4 or 6 king-move adjacent elements, with upper left element zero.
%C A304550 Column 7 of A304551.
%H A304550 R. H. Hardin, <a href="/A304550/b304550.txt">Table of n, a(n) for n = 1..210</a>
%e A304550 Some solutions for n=5
%e A304550 ..0..1..0..0..1..0..0. .0..1..0..1..1..1..0. .0..0..1..1..1..0..1
%e A304550 ..1..0..0..1..1..1..1. .0..1..1..0..0..0..1. .1..1..0..1..0..1..0
%e A304550 ..0..0..1..1..1..0..0. .1..1..0..0..0..1..0. .0..0..0..0..1..1..0
%e A304550 ..1..1..0..1..1..0..1. .0..0..1..0..0..1..0. .1..1..0..1..1..0..1
%e A304550 ..0..0..0..0..0..1..0. .0..0..1..0..0..1..0. .0..0..1..0..1..1..0
%Y A304550 Cf. A304551.
%K A304550 nonn
%O A304550 1,2
%A A304550 _R. H. Hardin_, May 14 2018

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