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Number of (n+1)X8 binary arrays with every 2X2 subblock sum equal to some horizontal or vertical neighbor 2X2 subblock sum
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%I #4 Mar 31 2012 12:36:02

%S 3616,631720,52129536,5020204316,468319269164,44566790792864

%N Number of (n+1)X8 binary arrays with every 2X2 subblock sum equal to some horizontal or vertical neighbor 2X2 subblock sum

%C Column 7 of A185497

%e Some solutions for 4X8

%e ..0..0..0..0..0..1..1..1....0..0..0..0..1..1..0..1....0..0..0..0..1..0..0..0

%e ..0..0..0..1..1..1..1..0....0..0..0..0..0..0..1..0....0..1..0..1..0..0..1..0

%e ..0..0..0..0..0..1..1..1....0..0..0..1..0..1..1..1....0..0..0..0..1..0..1..1

%e ..0..0..0..1..1..0..0..1....0..0..0..1..0..0..1..0....0..0..0..1..1..1..0..1

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 29 2011