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Number of nXn 0..1 arrays with every element unequal to 1, 2, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.
0

%I #4 Jun 28 2018 15:20:19

%S 0,7,125,9540,1820908,1000914270,1545539179382,6744089252983902,

%T 83045349878880145528

%N Number of nXn 0..1 arrays with every element unequal to 1, 2, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.

%C Diagonal of A316282.

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A316282.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jun 28 2018