|
%I #6 Apr 20 2020 00:08:25
%S 1,5,13,93,832,5101,49516,597306,7738947,148981944,3876180802
%N Number of n X n 0..1 arrays with every element unequal to 0, 1, 3, 5 or 6 king-move adjacent elements, with upper left element zero.
%C Diagonal of A304669.
%e Some solutions for n=5
%e ..0..1..1..0..1. .0..1..0..0..0. .0..0..0..0..0. .0..0..1..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..1..1. .0..0..0..0..0. .0..0..0..0..1. .0..0..0..0..0
%e ..0..1..1..1..1. .0..0..1..0..0. .1..0..0..0..0. .0..0..0..0..0
%e ..1..1..1..0..1. .0..1..1..0..1. .0..0..0..0..0. .0..1..0..0..1
%Y Cf. A304669.
%K nonn
%O 1,2
%A _R. H. Hardin_, May 16 2018
| 