A216950 Number of "rotten" strings of length n in {2,3}* (in the curling number sense).

0, 1, 1, 0, 1, 1, 2, 4, 4, 8, 14, 11, 18, 30, 26, 24, 40, 35, 58, 69, 48, 84, 158, 67, 139, 287, 215, 242, 490, 323, 624, 919, 516, 1072, 2150, 911, 1891, 3930

Offset

1,7

Comments

See A216730 for definition.

Links

Table of n, a(n) for n=1..38.

B. Chaffin, J. P. Linderman, N. J. A. Sloane and Allan Wilks, On Curling Numbers of Integer Sequences, arXiv:1212.6102 [math.CO], 2012-2013.

B. Chaffin, J. P. Linderman, N. J. A. Sloane and Allan Wilks, On Curling Numbers of Integer Sequences, Journal of Integer Sequences, Vol. 16 (2013), Article 13.4.3.

Crossrefs

Cf. A216730.

Sequence in context: A308528 A069753 A181245 * A240364 A225982 A282528

Adjacent sequences: A216947 A216948 A216949 * A216951 A216952 A216953

Keyword

nonn,more

Author

Benjamin Chaffin and N. J. A. Sloane, Sep 24 2012

Extensions

a(31)-a(34) from N. J. A. Sloane, Oct 28 2012

a(35)-a(38) from Lars Blomberg, Jul 30 2018

Status

approved