|
%I #7 Jan 25 2022 21:07:35
%S 11220,20864,47776,164576,433296,1379208,3629540,13289252,35756268,
%T 128976744,346446144,1333284060,3588481008,13880081488,37224984364,
%U 148837476180,398218723908,1607711747604,4285914451420,17630641010960
%N Number of (n+1) X 9 binary arrays with no 2 X 2 subblock sum equal to any horizontal or vertical neighbor 2 X 2 subblock sum.
%C Column 8 of A185798.
%H R. H. Hardin, <a href="/A185797/b185797.txt">Table of n, a(n) for n = 1..138</a>
%e Some solutions for 3 X 9
%e ..0..0..0..0..0..1..1..0..1....0..1..1..1..0..1..1..0..0
%e ..1..1..0..0..1..1..1..0..0....0..1..0..0..0..1..1..0..1
%e ..1..0..1..0..1..1..0..0..0....0..0..1..0..0..0..0..0..1
%Y Cf. A185798.
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 04 2011
| 