%I #6 Apr 26 2020 20:51:15
%S 1,5,34,598,23315,2094347,434357928,207301696580,228110991493680,
%T 578288109272844847,3378456566297565709729
%N Number of n X n 0..1 arrays with each 1 horizontally or vertically adjacent to 1, 3 or 4 1's.
%C Diagonal of A295551.
%e Some solutions for n=5
%e ..0..0..0..0..0. .1..0..1..1..0. .0..0..1..1..0. .1..0..1..1..0
%e ..0..0..1..1..0. .1..1..0..0..0. .0..0..0..0..1. .1..0..0..0..0
%e ..0..1..0..0..1. .1..0..0..1..0. .0..0..0..0..1. .0..0..1..0..0
%e ..1..1..1..0..1. .0..0..0..1..1. .1..0..1..1..0. .1..0..1..0..0
%e ..0..1..0..0..0. .1..1..0..1..0. .1..0..0..0..0. .1..0..0..1..1
%Y Cf. A295551.
%K nonn
%O 1,2
%A _R. H. Hardin_, Nov 23 2017