A218874 (A122536(n)-A003000(n))/2.

0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 4, 8, 18, 36, 73, 146, 295, 590, 1182, 2364, 4732, 9464, 18929, 37858, 75721, 151442, 302878, 605756, 1211504, 2423008, 4845968, 9691936, 19383784, 38767568, 77534894, 155069788, 310139104, 620278208, 1240555349

Offset: 1

Author

N. J. A. Sloane, Nov 09 2012

Keywords

• nonn

Comments

If a formula or recurrence were known it would explain the mysterious sequence A122536.

200 terms are known from the b-files for A122536 and A003000.

Links

• B. Chaffin, J. P. Linderman, N. J. A. Sloane and Allan Wilks, On Curling Numbers of Integer Sequences, arXiv:1212.6102, Dec 25 2012.
• 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.
• Index entries for sequences related to curling numbers

Crossrefs

Cf. A122536, A003000.