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%I
%S 1,4,13,418,16782,1368963,274090332,104360036860,78307988484284
%N Number of n X n 0..1 arrays with every element unequal to 0, 2, 3, 4 or 6 king-move adjacent elements, with upper left element zero.
%C Diagonal of A304551.
%e Some solutions for n=5
%e ..0..0..1..1..0. .0..1..1..0..1. .0..1..1..0..1. .0..1..0..1..0
%e ..1..1..1..0..1. .0..1..1..0..0. .0..1..0..1..0. .1..1..1..0..1
%e ..0..1..0..0..0. .0..1..1..1..1. .1..1..1..0..1. .0..0..1..1..1
%e ..1..0..1..0..1. .0..0..1..0..0. .0..1..1..0..0. .0..0..0..1..0
%e ..1..0..0..1..0. .1..1..1..0..1. .1..0..1..1..1. .1..1..0..0..1
%Y Cf. A304551.
%K nonn
%O 1,2
%A _R. H. Hardin_, May 14 2018
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