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Number of nX7 0..1 arrays with every element unequal to 2, 3, 5 or 7 king-move adjacent elements, with upper left element zero.
1

%I #4 May 09 2018 10:06:07

%S 0,72,61,181,772,2516,10024,35769,143364,546403,2127606,8299219,

%T 32202805,125918125,490459555,1914519705,7464476082,29134292070,

%U 113630849252,443388799039,1729833956517,6748798176297,26331366063005,102730407728899

%N Number of nX7 0..1 arrays with every element unequal to 2, 3, 5 or 7 king-move adjacent elements, with upper left element zero.

%C Column 7 of A304263.

%H R. H. Hardin, <a href="/A304262/b304262.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A304263.

%K nonn

%O 1,2

%A _R. H. Hardin_, May 09 2018