A216956 Triangle read by rows: A216955/2.

1, 1, 1, 2, 1, 1, 3, 3, 1, 1, 6, 6, 2, 1, 1, 10, 13, 5, 2, 1, 1, 20, 26, 10, 4, 2, 1, 1, 37, 55, 19, 9, 4, 2, 1, 1, 74, 107, 41, 18, 8, 4, 2, 1, 1, 143, 219, 82, 35, 17, 8, 4, 2, 1, 1, 286, 438, 164, 70, 34, 16, 8, 4, 2, 1, 1, 562, 881, 330, 143, 67, 33, 16, 8, 4, 2, 1, 1, 1124, 1762, 660, 286, 134, 66, 32, 16, 8, 4, 2, 1, 1

Offset: 1

Author

N. J. A. Sloane, Sep 26 2012

Keywords

• nonn
• tabl

Comments

It appears that reversed rows converge to A011782. - Omar E. Pol, Nov 20 2012

Examples

			Triangle begins:
1,
1, 1,
2, 1, 1,
3, 3, 1, 1,
6, 6, 2, 1, 1,
10, 13, 5, 2, 1, 1,
20, 26, 10, 4, 2, 1, 1,
37, 55, 19, 9, 4, 2, 1, 1,
74, 107, 41, 18, 8, 4, 2, 1, 1,
...
		

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

First column is A093371.

Cf. A216955.