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A241211 Number of binary strings of length n having exactly one factorization as a concatenation of palindromes of length >= 2. 2
0, 2, 4, 4, 18, 22, 64, 96, 188, 388, 648, 1248, 2040, 3784, 6544, 11162, 19356, 32396, 55768, 93678, 157308, 263308, 438512, 731198, 1211304, 2004076, 3306552, 5445588, 8955544, 14690980 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..30.

EXAMPLE

a(4) = 4, because {0011,0110,1001,1100} have unique factorization into palindromes of length >= 2.

CROSSREFS

Cf. A241208, A241210.

Sequence in context: A298148 A088042 A013140 * A155720 A230694 A155725

Adjacent sequences:  A241208 A241209 A241210 * A241212 A241213 A241214

KEYWORD

nonn,more

AUTHOR

Jeffrey Shallit, Apr 17 2014

EXTENSIONS

a(17)-a(30) from Giovanni Resta, Apr 18 2014

STATUS

approved

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Last modified June 18 18:52 EDT 2019. Contains 324215 sequences. (Running on oeis4.)