%I #6 Apr 26 2020 20:40:24

%S 2,11,131,4163,305430,55930891,25000646212,27295999984619,

%T 72988931277612942,477182559947251724928,7632223466274455982169083,

%U 298610649015649904265150954293,28578493893088208888472545213927279

%N Number of n X n 0..1 arrays with no 1 equal to more than one of its horizontal, vertical and antidiagonal neighbors.

%C Diagonal of A282862.

%e Some solutions for n=4

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

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

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

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

%Y Cf. A282862.

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 23 2017