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A058545 Trajectory of 23 under map that sends x to 3x - sigma(x), where sigma(x) is the sum of the divisors of x. 3
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

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

CROSSREFS

Cf. A037159, A058541, A058542.

Sequence in context: A198949 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

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Last modified January 18 23:05 EST 2019. Contains 319282 sequences. (Running on oeis4.)