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A316870 Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero. 0

%I

%S 1,8,99,2931,191678,30894538,11836970493,10702669011883,

%T 23392038065623330

%N Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

%C Diagonal of A316876.

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A316876.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jul 15 2018

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Last modified May 25 06:43 EDT 2022. Contains 354049 sequences. (Running on oeis4.)