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A316512 Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 3, 7 or 8 king-move adjacent elements, with upper left element zero. 0

%I #4 Jul 05 2018 07:12:55

%S 1,8,28,204,2995,73031,3646656,442204876,110715247064,59638747389710,

%T 71177795600554924,181350693611354151984,1002521061243272588552787

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

%C Diagonal of A316518.

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A316518.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jul 05 2018

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Last modified March 28 12:59 EDT 2024. Contains 371254 sequences. (Running on oeis4.)