A260840 Number of (n+2)X(7+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00010101.

2584, 2976, 6908, 13170, 16000, 37882, 80516, 119194, 231008, 526102, 890868, 1551098, 3444912, 6540148, 11105704, 22909488, 46468620, 81665548, 156797736, 323324270, 597713676, 1104974160, 2236199980, 4307963032, 7924411232

Offset

1,1

Comments

Column 7 of A260841

Links

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

Example

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

Crossrefs

Cf. A260841

Sequence in context: A235840 A200711 A235950 * A252310 A236351 A250241

Adjacent sequences: A260837 A260838 A260839 * A260841 A260842 A260843

Keyword

nonn

Author

R. H. Hardin, Aug 01 2015

Status

approved