A202723 - OEIS

%I #5 Mar 31 2012 12:36:50

%S 1314926081,223234807263,37651764287736,6316493287643944,

%T 1055277790676846818,176844069559231360063,29625263373200300829929,

%U 4962065842514784414546768,831093106168898765849106642

%N Number of (n+3)X8 binary arrays with no more than three of any consecutive four bits set in any row or column

%C Column 5 of A202726

%H R. H. Hardin, <a href="/A202723/b202723.txt">Table of n, a(n) for n = 1..69</a>

%e Some solutions for n=2

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Dec 23 2011