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A317267 Number of nXn 0..1 arrays with every element unequal to 0, 2, 3, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero. 0

%I

%S 1,4,13,498,31878,3234635,1396521994,1165304769027,2212187815200032

%N Number of nXn 0..1 arrays with every element unequal to 0, 2, 3, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

%C Diagonal of A317271.

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A317271.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jul 25 2018

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Last modified August 16 05:55 EDT 2022. Contains 356160 sequences. (Running on oeis4.)