%I #6 May 03 2020 15:37:45
%S 0,1,0,8,24,83,88,838,2234,15799,62938,432302,2162292,14402163,
%T 89993438,752458227,5948078028
%N Number of n X n 0..1 arrays with every element equal to 2 or 3 king-move adjacent elements, with upper left element zero.
%C Diagonal of A297814.
%e Some solutions for n=7
%e ..0..0..1..1..1..1..1. .0..0..1..1..1..1..1. .0..0..0..0..0..0..0
%e ..0..1..0..0..0..0..1. .0..1..0..0..0..0..1. .0..1..1..1..1..1..0
%e ..0..1..0..1..1..0..1. .1..0..1..1..1..1..0. .1..0..0..0..0..1..0
%e ..0..1..1..0..1..0..1. .1..0..1..0..0..1..0. .1..0..1..1..0..1..0
%e ..1..0..0..0..1..0..1. .1..0..0..1..0..1..0. .1..0..1..0..1..1..0
%e ..0..1..1..1..1..0..1. .0..1..1..1..0..1..0. .1..0..1..0..0..0..1
%e ..0..0..0..0..0..1..1. .0..0..0..0..1..0..0. .1..1..0..1..1..1..1
%Y Cf. A297814.
%K nonn
%O 1,4
%A _R. H. Hardin_, Jan 06 2018