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

1,11

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

Table of n, a(n) for n=1..40.

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.

Sequence in context: A347036 A297188 A291583 * A212205 A018096 A024415

Adjacent sequences: A218871 A218872 A218873 * A218875 A218876 A218877

Keyword

nonn

Author

N. J. A. Sloane, Nov 09 2012

Status

approved