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%I #6 Sep 16 2020 19:08:32
%S 1,4,11,166,1150,24985,308271,7577931,148783767,4946437814,
%T 177760275047
%N Number of n X n 0..1 arrays with every element unequal to 0, 2, 3 or 4 king-move adjacent elements, with upper left element zero.
%C Diagonal of A303888.
%e Some solutions for n=5
%e ..0..1..1..0..0. .0..1..0..1..1. .0..1..0..1..1. .0..1..0..0..1
%e ..1..0..0..1..1. .0..1..1..0..0. .0..1..1..0..0. .0..1..1..1..0
%e ..1..0..0..1..1. .0..1..1..0..0. .0..1..1..0..0. .0..1..1..1..1
%e ..1..0..0..1..1. .1..1..1..0..0. .0..1..1..0..0. .0..1..1..1..0
%e ..0..1..0..1..1. .0..1..0..1..1. .0..1..1..0..0. .0..1..0..0..1
%Y Cf. A303888.
%K nonn
%O 1,2
%A _R. H. Hardin_, May 02 2018
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