A184373 - OEIS

%I #5 Mar 31 2012 12:35:59

%S 420633,281803871,185547841629,122443114867993,80778452206783159,

%T 53293289955084658949,35159890626610196979641,

%U 23196517518911246631354055,15303755709562804997482560737,10096556166552290137769922123373

%N 1/3 the number of (n+1)X7 0..2 arrays with every 2X2 subblock having at least two equal elements connected horizontally or vertically

%C Column 6 of A184376

%H R. H. Hardin, <a href="/A184373/b184373.txt">Table of n, a(n) for n = 1..154</a>

%e Some solutions for 3X7 with a(1,1)=0

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 12 2011