|
%I #6 Jun 15 2020 14:21:18
%S 1,5,6,55,1095,35320,2044405,321811361,111378069579,67948097097737
%N Number of n X n 0..1 arrays with every element equal to 0, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.
%C Diagonal of A299249.
%e Some solutions for n=5
%e ..0..0..1..0..0. .0..1..1..1..1. .0..0..1..0..0. .0..0..0..0..0
%e ..0..1..1..0..1. .1..1..0..0..1. .0..1..1..1..0. .1..0..1..1..0
%e ..1..1..1..1..1. .1..0..1..0..1. .1..1..1..1..1. .0..0..1..0..1
%e ..0..1..1..1..0. .1..0..0..1..1. .0..0..1..0..1. .1..0..1..0..1
%e ..0..0..1..0..0. .1..1..1..1..0. .0..1..1..0..0. .0..0..0..1..1
%Y Cf. A299249.
%K nonn
%O 1,2
%A _R. H. Hardin_, Feb 05 2018
| 