%I #6 Sep 16 2020 19:05:42
%S 1,8,78,1596,72890,8883058,2346396384,1203039901394,1490405412540557
%N Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
%C Diagonal of A303513.
%e Some solutions for n=5
%e ..0..1..0..1..0. .0..0..0..0..1. .0..0..0..1..0. .0..1..0..1..0
%e ..0..1..1..0..1. .0..1..0..1..1. .1..1..1..1..0. .0..1..1..1..0
%e ..0..1..0..0..0. .0..1..0..1..0. .1..1..1..1..0. .0..1..0..0..1
%e ..0..1..0..1..0. .0..0..1..0..0. .0..0..1..0..1. .0..1..1..1..1
%e ..0..1..0..1..1. .1..1..0..1..1. .1..0..1..0..1. .0..1..0..0..1
%Y Cf. A303513.
%K nonn
%O 1,2
%A _R. H. Hardin_, Apr 25 2018