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%I #6 Apr 26 2020 20:48:09
%S 1,2,8,42,438,8241,279663,17574795,2023191364,425872679440,
%T 164093026377725,115549694765467808,148496731427890025827
%N Number of n X n 0..1 arrays with each 1 horizontally or vertically adjacent to 2 or 4 1's.
%C Diagonal of A295205.
%e Some solutions for n=6
%e ..0..0..0..0..0..0. .1..1..0..1..1..1. .0..1..1..1..1..1. .0..1..1..1..0..0
%e ..1..1..1..1..0..0. .1..1..1..1..0..1. .0..1..0..0..0..1. .0..1..0..1..0..0
%e ..1..0..0..1..1..0. .0..1..0..0..0..1. .1..1..0..1..1..1. .1..1..0..1..1..0
%e ..1..0..0..0..1..0. .0..1..1..0..0..1. .1..0..1..1..0..0. .1..0..0..0..1..1
%e ..1..1..1..1..1..1. .0..0..1..1..1..1. .1..1..1..0..0..0. .1..1..1..1..0..1
%e ..0..0..0..0..1..1. .0..0..0..0..0..0. .0..0..0..0..0..0. .0..0..0..1..1..1
%Y Cf. A295205.
%K nonn
%O 1,2
%A _R. H. Hardin_, Nov 16 2017