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%I #6 Apr 26 2020 20:48:44
%S 1,2,10,147,9536,1245294,444447937,436106162865,1123957773816109,
%T 7694570450089060470,140076394691747502547476
%N Number of n X n 0..1 arrays with each 1 horizontally or vertically adjacent to 2 or 3 1's.
%C Diagonal of A295213.
%e Some solutions for n=5
%e ..1..1..1..0..0. .0..1..1..1..0. .0..0..0..1..1. .0..0..0..0..0
%e ..1..0..1..1..0. .1..1..0..1..1. .1..1..0..1..1. .0..0..1..1..1
%e ..1..1..0..1..1. .1..1..0..0..1. .1..1..1..1..0. .1..1..1..0..1
%e ..0..1..0..0..1. .0..1..1..1..1. .1..0..0..1..0. .1..1..1..0..1
%e ..0..1..1..1..1. .0..1..1..0..0. .1..1..1..1..0. .0..0..1..1..1
%Y Cf. A295213.
%K nonn
%O 1,2
%A _R. H. Hardin_, Nov 17 2017
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