|
%I #4 Jul 31 2018 12:42:58
%S 1,8,170,9513,1489357,611929512,703696012516,2224035714999860,
%T 19157046204651408615
%N Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 3, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero.
%C Diagonal of A317572.
%e Some solutions for n=5
%e ..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0
%e ..1..1..0..0..0. .0..0..0..1..0. .1..0..1..0..0. .0..1..0..0..0
%e ..0..0..0..0..0. .0..1..1..0..0. .0..1..1..0..1. .0..0..0..0..0
%e ..1..1..0..1..0. .1..0..0..0..0. .0..1..0..1..0. .0..1..1..0..0
%e ..0..0..0..1..0. .0..0..1..1..0. .1..1..1..1..0. .1..0..0..0..0
%Y Cf. A317572.
%K nonn
%O 1,2
%A _R. H. Hardin_, Jul 31 2018
| 