A317260 - OEIS

%I #4 Jul 25 2018 11:06:59

%S 1,5,10,74,718,7477,219131,13595141,1430955986,323294486785

%N Number of nXn 0..1 arrays with every element unequal to 0, 1, 3, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

%C Diagonal of A317266.

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A317266.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jul 25 2018