A186935 - OEIS

%I #5 Mar 31 2012 12:36:06

%S 344,6848,46960,400192,3026432,25314744,199197496,1627815216,

%T 12959411184,105094646680,841526384968,6794773877768,54572082394368,

%U 439857772138872,3537187036922272,28484975285666720,229175684311650976

%N Number of (n+1)X6 binary arrays with every 2X2 subblock trace equal to exactly one or two horizontal and vertical neighbor 2X2 subblock traces

%C Column 5 of A186939

%H R. H. Hardin, <a href="/A186935/b186935.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for 4X6

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 01 2011