A260543 Number of (n+2)X(7+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00010001

2732, 4296, 11370, 22212, 40916, 105058, 219852, 434066, 1050126, 2356780, 4693462, 10782734, 24926220, 51270870, 112254332, 260975658, 556547696, 1188249860, 2722931988, 5983413184, 12716775116, 28508190056, 63712199118

Offset

1,1

Comments

Column 7 of A260544

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=4
..0..1..1..0..0..0..0..0..1....0..0..0..0..1..0..0..1..0
..0..0..0..0..0..1..0..0..1....0..0..0..0..1..0..0..0..0
..0..0..0..0..0..1..0..0..0....1..1..0..0..0..0..0..0..0
..0..1..1..0..0..0..0..0..0....0..0..0..0..0..0..0..1..0
..0..0..0..0..0..0..0..0..1....0..0..0..1..1..0..0..1..0
..0..0..0..0..1..1..0..0..0....1..0..0..0..0..0..0..0..0

Crossrefs

Cf. A260544

Sequence in context: A266229 A076575 A015423 * A145647 A251946 A045155

Adjacent sequences: A260540 A260541 A260542 * A260544 A260545 A260546

Keyword

nonn

Author

R. H. Hardin, Jul 28 2015

Status

approved