%I #6 Apr 26 2020 20:57:03
%S 1,5,31,204,8472,472540,39608385,10042412853,5131681923323,
%T 4854151578229861,10472350366798925062
%N Number of n X n 0..1 arrays with each 1 adjacent to 2 or 4 king-move neighboring 1's.
%C Diagonal of A296039.
%e Some solutions for n=5
%e ..0..1..1..0..0. .0..0..1..0..0. .0..1..1..0..0. .0..0..0..0..1
%e ..0..0..1..0..0. .1..1..0..1..0. .0..1..0..0..0. .0..0..0..1..1
%e ..0..0..0..0..0. .1..0..1..0..0. .0..0..0..1..1. .0..0..0..1..1
%e ..0..1..1..1..0. .0..0..0..0..0. .1..1..0..1..0. .1..1..0..1..0
%e ..0..0..1..1..1. .0..0..0..0..0. .0..1..0..1..1. .1..0..0..0..0
%Y Cf. A296039.
%K nonn
%O 1,2
%A _R. H. Hardin_, Dec 03 2017