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%I #4 Jun 08 2018 08:02:51
%S 1,4,25,1595,383910,351440611,1172824606532,14227138873003015,
%T 624906012671792336577
%N Number of nXn 0..1 arrays with every element unequal to 0, 2, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero.
%C Diagonal of A305685.
%e Some solutions for n=5
%e ..0..0..0..1..0. .0..1..0..0..0. .0..1..0..0..0. .0..1..0..1..0
%e ..1..1..0..0..1. .0..1..1..1..1. .0..1..0..1..1. .1..0..0..1..0
%e ..1..1..0..0..0. .0..0..0..0..1. .1..1..1..0..0. .0..1..0..0..1
%e ..0..0..1..0..1. .0..1..1..0..0. .1..0..0..1..1. .1..1..0..1..0
%e ..1..1..0..0..1. .1..0..0..1..1. .1..0..0..1..1. .0..1..0..1..0
%Y Cf. A305685.
%K nonn
%O 1,2
%A _R. H. Hardin_, Jun 08 2018
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