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A320396 Number of n X n 0..1 arrays with every element unequal to 0, 1, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 0

%I

%S 1,8,142,5956,561290,127789964,69104597430,87904609418608,

%T 265822679694670068,1902510531491092792194

%N Number of n X n 0..1 arrays with every element unequal to 0, 1, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Diagonal of A320402.

%e Some solutions for n=5:

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

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

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

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

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

%Y Cf. A320402.

%K nonn,more

%O 1,2

%A _R. H. Hardin_, Oct 12 2018

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Last modified July 1 06:55 EDT 2022. Contains 354952 sequences. (Running on oeis4.)