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A260276 Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000000 00000001 or 00001011 1
34, 85, 747, 6044, 65907, 1271212, 28517537, 866931786, 41412466296, 2594607954501, 217632708449176, 26820265742576644, 4556787104721551797, 1048460617788126795330, 341811609666627431538479 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A260284

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..18

EXAMPLE

Some solutions for n=4

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

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

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

CROSSREFS

Cf. A260284

Sequence in context: A036199 A092223 A046764 * A278311 A213025 A086005

Adjacent sequences:  A260273 A260274 A260275 * A260277 A260278 A260279

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 22 2015

STATUS

approved

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Last modified September 19 23:31 EDT 2019. Contains 327207 sequences. (Running on oeis4.)