%I #6 May 26 2024 02:34:18

%S 0,3,17,72,4364,165890,14872138,5301169782,6077202952491

%N Number of n X n 0..1 arrays with every element unequal to 1, 2, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

%C Diagonal of A317458.

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A317458.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jul 28 2018