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A316998 Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 3, 4, 6 or 8 king-move adjacent elements, with upper left element zero. 0

%I #4 Jul 18 2018 19:22:38

%S 1,8,162,7665,854383,223714229,140997597309,211618250694112,

%T 754017146499756182

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

%C Diagonal of A317004.

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A317004.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jul 18 2018

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Last modified April 18 06:24 EDT 2024. Contains 371769 sequences. (Running on oeis4.)