%I #4 Jul 10 2018 15:02:32

%S 1,4,8,23,88,2081,61454,2431114,257262996,52155197669,17033276992389,

%T 11335703888987492,14840834772251861064,35171617032782262638585

%N Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

%C Diagonal of A316693.

%e Some solutions for n=5

%e ..0..1..1..1..1. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0

%e ..1..0..1..1..1. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0

%e ..1..1..1..1..1. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0

%e ..1..1..1..0..1. .0..0..1..1..0. .0..1..1..0..0. .0..1..0..1..0

%e ..1..1..1..1..0. .0..0..0..0..0. .0..0..0..0..0. .1..0..0..0..0

%Y Cf. A316693.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jul 10 2018