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A302316 Number of n X n 0..1 arrays with every element equal to 0, 1, 2 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 0

%I #6 Sep 16 2020 18:54:29

%S 1,8,65,953,20686,708572,45861206,4252740185,585620151599

%N Number of n X n 0..1 arrays with every element equal to 0, 1, 2 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%C Diagonal of A302322.

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A302322.

%K nonn

%O 1,2

%A _R. H. Hardin_, Apr 05 2018

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Last modified March 29 11:14 EDT 2024. Contains 371278 sequences. (Running on oeis4.)