A260247 - OEIS

A260247

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

10110, 18837, 56634, 85491, 238852, 906498, 1606456, 3601412, 12214696, 29652462, 59024564, 170234202, 476307636, 1016593000, 2509402408, 7209266008, 17002833240, 39321041096, 107511503760, 273221762146, 633085054356

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 7 of A260248

LINKS

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

EXAMPLE

Some solutions for n=4

..0..1..0..0..0..0..0..0..1....1..0..0..1..0..0..1..0..1

..0..0..0..1..0..0..0..0..0....0..1..0..0..1..0..0..1..0

..1..0..0..0..1..0..0..1..0....0..0..0..0..0..0..0..0..0

..0..0..0..0..0..0..0..0..1....1..0..0..0..0..0..0..0..0

..0..1..0..0..0..0..0..0..0....0..1..0..0..1..0..0..1..0

..0..0..1..0..0..1..0..1..0....0..0..0..1..0..0..0..0..1

CROSSREFS

Cf. A260248

Sequence in context: A227407 A227409 A352947 * A058042 A191244 A269066

Adjacent sequences: A260244 A260245 A260246 * A260248 A260249 A260250

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 20 2015

STATUS

approved