A215395 - OEIS

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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.

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

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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