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Number of nXn 0..1 arrays with every element unequal to 0, 1, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.
0

%I #4 Jul 08 2018 16:13:31

%S 1,5,14,77,649,5464,65158,1249304,29420195,965313430,47647816201,

%T 3134382222825,282884293077707

%N Number of nXn 0..1 arrays with every element unequal to 0, 1, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

%C Diagonal of A316615.

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A316615.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jul 08 2018