A185796 - OEIS

%I #5 Mar 31 2012 12:36:03

%S 4356,8320,18616,59944,149828,441004,1091308,3629540,9151956,29663392,

%T 74544872,255953372,646804184,2216610520,5586633244,19681657576,

%U 49743175552,176195058308,444048959908,1593418221824,4026932301548

%N Number of (n+1)X8 binary arrays with no 2X2 subblock sum equal to any horizontal or vertical neighbor 2X2 subblock sum

%C Column 7 of A185798

%H R. H. Hardin, <a href="/A185796/b185796.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for 3X8

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 04 2011