A260176 Number of (n+2)X(7+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000101 or 00010001

5235, 15847, 46263, 153286, 572908, 2136068, 7542684, 27290652, 103230076, 376084390, 1384508646, 5089292404, 18950590232, 69333670572, 257144715114, 945604043768, 3506611951218, 12872285438650, 47738167503228

Offset

1,1

Comments

Column 7 of A260177

Links

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

Example

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

Crossrefs

Cf. A260177

Sequence in context: A204139 A237408 A235296 * A093182 A124658 A256745

Adjacent sequences: A260173 A260174 A260175 * A260177 A260178 A260179

Keyword

nonn

Author

R. H. Hardin, Jul 17 2015

Status

approved