%I #6 Dec 26 2023 23:56:36
%S 512,65640,8231592,1042063656,131467169720,16607782066704,
%T 2096961683069192,264820293988996048,33441129238755694072,
%U 4223013161022170839808,533285078101618075961512
%N 1/81 the number of (n+1) X 5 0..2 arrays with no 2 X 2 subblock being a reflection across the shared element pair of any horizontal or vertical neighbor.
%C Column 4 of A183819.
%e Some solutions with upper left block zero for 3 X 5
%e ..0..0..2..0..2....0..0..1..1..2....0..0..1..2..0....0..0..2..2..2
%e ..0..0..2..2..1....0..0..2..1..2....0..0..1..2..1....0..0..2..1..1
%e ..0..1..1..2..0....0..2..0..0..1....2..1..1..1..2....0..1..1..0..0
%Y Cf. A183819.
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 07 2011