A237566 - OEIS

%I #4 Feb 09 2014 06:58:22

%S 311512,4121060,61521086,977290740,14891233160,228407442348,

%T 3615152813462,55793291175056,882176438911922,13667993065228308,

%U 217505797950500694,3377924302868998888,53802897865062024654

%N Number of (n+1)X(7+1) 0..2 arrays with the upper median plus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one

%C Column 7 of A237567

%H R. H. Hardin, <a href="/A237566/b237566.txt">Table of n, a(n) for n = 1..20</a>

%e Some solutions for n=1

%e ..0..2..0..0..0..2..1..0....0..2..1..1..2..2..0..1....0..1..1..1..0..0..1..1

%e ..0..1..1..1..0..1..1..0....0..2..1..2..1..2..1..2....0..0..0..1..0..2..0..2

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 09 2014