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Number of nX7 0..1 arrays with every element unequal to 1, 2, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
1

%I #4 Aug 28 2018 11:14:54

%S 8,102,258,1782,12073,67976,437825,2689769,16069287,100151409,

%T 617826286,3829474681,23768872002,147448159384,915439292568,

%U 5684596730219,35296722920895,219214357674061,1361365706626785,8454876230184285

%N Number of nX7 0..1 arrays with every element unequal to 1, 2, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Column 7 of A318552.

%H R. H. Hardin, <a href="/A318551/b318551.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

%e ..0..1..0..0..1..0..0. .0..1..0..1..1..1..1. .0..1..0..1..0..0..1

%e ..1..1..0..0..0..0..1. .1..1..1..0..1..0..1. .0..0..0..0..0..0..1

%e ..0..0..0..1..0..0..0. .0..1..1..1..1..1..1. .0..0..0..1..0..0..1

%e ..0..1..0..0..1..0..0. .1..1..0..1..1..0..1. .1..0..0..0..1..1..0

%e ..1..1..1..1..1..0..1. .1..0..0..1..0..0..1. .0..1..0..0..1..1..1

%Y Cf. A318552.

%K nonn

%O 1,1

%A _R. H. Hardin_, Aug 28 2018