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A260098 Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000101 or 00010101 0
48, 201, 1136, 7119, 47576, 355098, 2703084, 23254546, 207675396, 2011569856, 20907484556, 232901842600, 2783676334932, 35816209079553 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A260106

LINKS

Table of n, a(n) for n=1..14.

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Cf. A260106

Sequence in context: A275507 A072254 A290350 * A260286 A183683 A260240

Adjacent sequences:  A260095 A260096 A260097 * A260099 A260100 A260101

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 16 2015

STATUS

approved

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Last modified January 19 22:12 EST 2022. Contains 350466 sequences. (Running on oeis4.)