A185776 - OEIS

%I #4 Mar 31 2012 12:36:03

%S 1296000,190416934,27239862108,4212755548948,641850855452998

%N Number of (n+1)X7 0..2 arrays with no 2X2 subblock sum equal to any horizontal or vertical neighbor 2X2 subblock sum

%C Column 6 of A185777

%e Some solutions for 3X7

%e ..0..0..1..2..0..2..2....0..0..1..1..2..1..0....0..0..1..0..2..1..2

%e ..0..1..0..0..0..2..2....0..2..0..2..2..0..0....0..0..0..2..1..2..0

%e ..0..1..1..1..0..0..2....0..1..1..2..2..0..2....0..1..1..1..2..2..2

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 03 2011