|
%I #6 Mar 31 2012 12:36:01
%S 16,92,866,13977,265724,11083678,560051658,65404659846,9335228454364,
%T 3094788312788324,1254062946005871088,1180690397907898894604,
%U 1358747319295346555003560,3633103600068550758778045101
%N Number of (n+1)X(n+1) binary arrays with no 2X2 subblock determinant equal to any horizontal or vertical neighbor 2X2 subblock determinant
%C Diagonal of A185467
%H R. H. Hardin, <a href="/A185458/b185458.txt">Table of n, a(n) for n = 1..18</a>
%e Some solutions for 3X3
%e ..0..0..1....1..0..0....1..1..0....0..1..0....0..1..1....1..0..1....0..0..1
%e ..0..1..0....0..1..1....1..1..1....1..0..1....0..1..0....1..1..0....0..1..1
%e ..1..0..1....0..1..0....0..1..1....0..1..0....1..0..0....0..0..1....1..0..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 28 2011
| 