A186839 - OEIS

%I #7 Jan 27 2013 02:50:56

%S 24748736,897952936,32614678623,1078797163411,20663923742904

%N Number of (n+2)X10 binary arrays with 3X3 subblock sums nondecreasing rightwards and downwards.

%C Column 8 of A186840

%e Some solutions for 4X10

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 27 2011