%I #6 Oct 02 2021 14:53:40
%S 3090668,6215002266,5253540132125,5541254050323697,
%T 5484853650034152292,5583822993675095945553
%N 1/8192 the number of (n+2) X 7 0..3 arrays with each 3 X 3 subblock trace equal to some horizontal or vertical neighbor 3 X 3 subblock trace.
%C Column 5 of A186553.
%e Some solutions for 4 X 7
%e ..0..0..0..1..0..2..2....0..0..0..3..3..1..2....0..0..0..2..1..3..1
%e ..0..0..0..0..1..2..1....0..0..0..0..0..1..1....0..0..0..0..3..3..3
%e ..0..0..0..0..0..1..1....0..0..0..0..0..2..1....0..0..0..0..0..0..1
%e ..0..0..0..0..0..3..1....0..0..0..0..0..3..1....0..0..0..0..0..0..2
%Y Cf. A186553.
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 23 2011
