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A260467 Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000000 00000001 or 00010101 1
34, 92, 658, 5034, 57524, 1095328, 24138984, 741446708, 35549850396, 2210679193297, 185698612792568, 22953437585181163, 3891199671596923784, 894945430246534184300, 292131961025408714854594 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A260475

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..17

EXAMPLE

Some solutions for n=4

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

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

..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..0....0..0..0..0..0..0

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

CROSSREFS

Cf. A260475

Sequence in context: A183311 A282811 A185460 * A202421 A202414 A160062

Adjacent sequences:  A260464 A260465 A260466 * A260468 A260469 A260470

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 26 2015

STATUS

approved

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Last modified April 3 14:34 EDT 2020. Contains 333197 sequences. (Running on oeis4.)