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A218871 Second column of A218869. 1
0, 2, 4, 12, 20, 52, 100, 214, 414, 876, 1722, 3524, 6992, 14144, 28188, 56720, 113180, 227084, 453748, 908804, 1816726, 3636336, 7270770, 14547228, 29090912, 58192994, 116378984, 232780848, 465546796, 931139720, 1862251212, 3724592874, 7449128940, 14898442336, 29796768552 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,2

LINKS

John P. Linderman, Table of n, a(n) for n = 2..64

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.

CROSSREFS

Cf. A218869.

Sequence in context: A168380 A308286 A297184 * A121569 A319213 A099603

Adjacent sequences:  A218868 A218869 A218870 * A218872 A218873 A218874

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Nov 07 2012

STATUS

approved

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Last modified January 25 23:08 EST 2020. Contains 331270 sequences. (Running on oeis4.)