%I #4 Jul 06 2018 12:22:56
%S 1,4,26,136,4219,114514,5074646,681913008,140688693646,48442426003864,
%T 36951311160860211
%N Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 4, 7 or 8 king-move adjacent elements, with upper left element zero.
%C Diagonal of A316545.
%e Some solutions for n=5
%e ..0..0..0..1..1. .0..0..0..0..1. .0..1..1..0..0. .0..1..0..0..0
%e ..0..0..0..0..0. .0..0..0..1..0. .0..0..0..0..0. .0..1..0..0..0
%e ..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0
%e ..0..0..1..0..1. .0..0..0..1..0. .1..1..0..1..0. .1..0..0..1..0
%e ..0..0..1..0..1. .1..1..0..0..0. .1..1..1..0..0. .1..0..0..1..0
%Y Cf. A316545.
%K nonn
%O 1,2
%A _R. H. Hardin_, Jul 06 2018
|