%I #4 Aug 10 2018 10:37:21
%S 0,1,1,13,29,167,3630,38448,534829,6617410,140471071,2629043923,
%T 75055126813
%N Number of nXn 0..1 arrays with every element unequal to 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
%C Diagonal of A317902.
%e Some solutions for n=5
%e ..0..1..1..0..0. .0..1..0..1..0. .0..1..0..1..0. .0..1..0..0..1
%e ..1..0..1..1..1. .1..0..0..1..0. .1..0..0..1..0. .1..1..1..0..0
%e ..1..1..1..0..0. .1..0..1..1..1. .1..0..1..1..0. .0..1..1..0..1
%e ..0..1..0..0..1. .0..0..1..0..1. .0..0..1..1..1. .0..1..0..0..1
%e ..0..1..0..1..0. .1..0..1..1..0. .1..0..0..1..0. .0..1..0..1..0
%Y Cf. A317902.
%K nonn
%O 1,4
%A _R. H. Hardin_, Aug 10 2018
|