A058545 Trajectory of 23 under map that sends x to 3x - sigma(x), where sigma(x) is the sum of the divisors of x.

23, 45, 57, 91, 161, 291, 481, 911, 1821, 3031, 5621, 9759, 16261, 29199, 48661, 97321, 180731, 361461, 595359, 914661, 1302543, 1810989, 2732295, 3594645, 4393215, 5513805, 5482215, 6700245, 8913663, 12588669, 19116087, 31171125

Offset

0,1

Links

Table of n, a(n) for n=0..31.

Crossrefs

Cf. A037159, A058541, A058542.

Sequence in context: A334113 A214891 A003859 * A161709 A030656 A122041

Adjacent sequences: A058542 A058543 A058544 * A058546 A058547 A058548

Keyword

nonn

Author

N. J. A. Sloane, Dec 24 2000

Status

approved