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%I #4 Aug 21 2018 13:17:22
%S 0,1,4,174,24576,12458503,21578384304,127593300875084,
%T 2578465118138197116,178097203297601659441467,
%U 42043114501504823608330154694
%N Number of nXn 0..1 arrays with every element unequal to 2, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
%C Diagonal of A318222.
%e Some solutions for n=5
%e ..0..1..0..0..1. .0..1..1..0..1. .0..1..0..1..0. .0..1..0..0..1
%e ..1..1..0..1..0. .1..0..1..0..1. .1..0..0..1..0. .1..1..0..1..0
%e ..0..0..1..1..0. .0..0..1..0..0. .0..0..0..1..0. .0..1..1..0..1
%e ..1..0..1..0..1. .1..1..0..1..0. .1..1..0..0..1. .0..0..0..1..0
%e ..1..0..0..1..0. .0..0..1..0..1. .0..0..1..1..0. .1..1..1..0..1
%Y Cf. A318222.
%K nonn
%O 1,3
%A _R. H. Hardin_, Aug 21 2018