A186062 - OEIS

%I #5 Mar 31 2012 12:36:04

%S 179442,5004260,109272739,1895454019,44097747372,948612706087,

%T 18130539910403,404252413909581,8653110308655449,169487105353268172,

%U 3721002454944851222,79581242553779690117,1574732581918069923120

%N Number of (n+2)X10 binary arrays with each 3X3 subblock having a positive determinant

%C Column 8 of A186063

%H R. H. Hardin, <a href="/A186062/b186062.txt">Table of n, a(n) for n = 1..185</a>

%e Some solutions for 4X10

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 11 2011