A260247 - OEIS

%I #4 Jul 20 2015 13:03:12

%S 10110,18837,56634,85491,238852,906498,1606456,3601412,12214696,

%T 29652462,59024564,170234202,476307636,1016593000,2509402408,

%U 7209266008,17002833240,39321041096,107511503760,273221762146,633085054356

%N Number of (n+2)X(7+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000101 or 00001001

%C Column 7 of A260248

%H R. H. Hardin, <a href="/A260247/b260247.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

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

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

%Y Cf. A260248

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 20 2015