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%I #4 Jun 18 2018 07:35:15
%S 1,8,45,458,12349,554682,36596835,8395262149,4973359586800,
%T 4903224406630694
%N Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 3, 6 or 7 king-move adjacent elements, with upper left element zero.
%C Diagonal of A306053.
%e Some solutions for n=5
%e ..0..0..1..0..1. .0..1..1..0..0. .0..0..0..0..1. .0..0..1..1..0
%e ..0..1..0..1..0. .1..1..0..0..0. .0..0..0..1..0. .1..0..1..1..0
%e ..1..0..0..0..0. .1..1..1..1..0. .0..0..0..1..0. .1..1..1..1..0
%e ..0..1..0..0..1. .1..1..1..0..0. .0..0..1..0..0. .0..0..1..0..1
%e ..0..0..0..1..1. .1..1..1..1..1. .1..1..0..0..0. .0..1..1..1..1
%Y Cf. A306053.
%K nonn
%O 1,2
%A _R. H. Hardin_, Jun 18 2018
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