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

Author

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

Keywords

• nonn
• more

Comments

See A216730 for definition.

Links

• 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.

Extensions

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

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