%I #6 Sep 16 2020 19:15:54
%S 1,4,19,110,931,11079,132348,2942145,77098563,2797159164
%N Number of n X n 0..1 arrays with every element unequal to 0, 1, 2, 4 or 6 king-move adjacent elements, with upper left element zero.
%C Diagonal of A304479.
%e Some solutions for n=5
%e ..0..0..1..0..1. .0..0..0..0..0. .0..0..1..1..1. .0..1..1..1..0
%e ..0..0..1..0..1. .0..0..0..0..0. .0..1..0..1..1. .0..1..1..1..0
%e ..0..0..0..1..1. .0..0..0..0..1. .1..0..0..0..0. .1..1..1..0..0
%e ..0..0..0..0..1. .1..1..0..1..0. .1..1..0..1..1. .1..1..0..1..0
%e ..1..1..0..0..1. .1..1..1..0..0. .1..0..1..1..1. .1..1..0..1..0
%Y Cf. A304479.
%K nonn
%O 1,2
%A _R. H. Hardin_, May 13 2018