A161370 a(n) = 2*A010844(n) + 1.

3, 7, 27, 159, 1267, 12663, 151947, 2127247, 34035939, 612646887, 12252937723, 269564629887, 6469551117267, 168208329048919, 4709833213369707, 141294996401091183, 4521439884834917827, 153728956084387206087

Offset

0,1

Links

Table of n, a(n) for n=0..17.

Mathieu Guay-Paquet and Jeffrey Shallit, Avoiding Squares and Overlaps Over the Natural Numbers, Discrete Math., 309 (2009), 6245-6254.

Mathieu Guay-Paquet and Jeffrey Shallit, Avoiding Squares and Overlaps Over the Natural Numbers, arXiv:0901.1397 [math.CO], 2009.

Crossrefs

Cf. A010844. Column 2 of A161380.

Sequence in context: A136580 A292897 A267625 * A280020 A232806 A270349

Adjacent sequences: A161367 A161368 A161369 * A161371 A161372 A161373

Keyword

nonn

Author

N. J. A. Sloane, Nov 27 2009

Status

approved