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A215395 Number of length-n 0..2 arrays connected end-around, with no sequence of L<n elements immediately followed by itself (periodic "squarefree"), and new values introduced in order 0..2. 0
1, 1, 1, 2, 0, 3, 0, 4, 0, 0, 11, 12, 13, 0, 5, 8, 0, 42, 38, 50, 7, 77, 115, 120, 125, 117, 135, 210, 348, 645, 837, 928, 792, 986 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

Column 2 of A215401.

LINKS

Table of n, a(n) for n=1..34.

EXAMPLE

All solutions for n=6:

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

..1....1....1

..2....0....2

..1....2....0

..0....1....2

..2....2....1

CROSSREFS

Sequence in context: A234580 A352740 A108416 * A338569 A343757 A108760

Adjacent sequences: A215392 A215393 A215394 * A215396 A215397 A215398

KEYWORD

nonn

AUTHOR

R. H. Hardin, Aug 09 2012

STATUS

approved

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Last modified January 31 04:27 EST 2023. Contains 359947 sequences. (Running on oeis4.)