A185842 - OEIS

A185842

Number of (n+1)X7 0..2 arrays with every 2X2 subblock trace equal to some horizontal or vertical neighbor 2X2 subblock trace

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

%S 72225,28276065,6182861913,1532963751183,373447226493477,

%T 91469611366917651,22396183799936101173,5482800643934316189987,

%U 1342328585051474225431335,328632114274707226816589733

%N Number of (n+1)X7 0..2 arrays with every 2X2 subblock trace equal to some horizontal or vertical neighbor 2X2 subblock trace

%C Column 6 of A185845

%H R. H. Hardin, <a href="/A185842/b185842.txt">Table of n, a(n) for n = 1..14</a>

%e Some solutions for 3X7

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 05 2011