A186533 - OEIS

%I #4 Mar 31 2012 12:36:05

%S 1448300,471337960,169733268904,60763226187367,21417901169134908

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

%C Column 6 of A186536

%e Some solutions for 3X7

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 23 2011