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A260130 Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00010101 01010101 or 01010111 1
36, 128, 1162, 8292, 89000, 1799114, 39696994, 1187010782, 57609323976, 3606588061702, 300430871364792, 37162234733862940, 6322213755325674874, 1451277611337930065374, 473372879349872175254782 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A260138

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

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

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

CROSSREFS

Cf. A260138

Sequence in context: A250625 A057837 A007265 * A155708 A196891 A105090

Adjacent sequences:  A260127 A260128 A260129 * A260131 A260132 A260133

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 17 2015

STATUS

approved

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Last modified January 18 09:26 EST 2022. Contains 350454 sequences. (Running on oeis4.)