A293355 Infinitary aliquot sequence starting at 6216.

6216, 12024, 13176, 24024, 56616, 105624, 96096, 178080, 350688, 454704, 189528, 296472, 512808, 826392, 1535208, 2387352, 4124328, 6980472, 13561128, 29494872, 38242728, 42031872, 706200, 1315560, 2846040, 5936520, 12187320, 24375000, 57656040, 116396760, 233580840, 467162040

Offset

0,1

Comments

Is this sequence infinite?

The sequence reaches a local maximum at a(398), then descends to a local minimum at a(923) with a value of 20989279721046. Thereafter it rises again somewhat slowly and chaotically. - Hans Havermann, Jul 17 2021

Links

Ray Chandler and Hans Havermann, Table of n, a(n) for n = 0..6042

Hans Havermann, Graphs of infinitary aliquot sequences for 840, 1152, 2442, 2658, 2982, 5766, 6216, 6870, 7560, 8670, 9030, 9570. (Click to see full plots)

Hans Havermann, How the author first extended the b-file

Hans Havermann, Graph of a(n+1)/a(n)

Formula

a(n+1) = A126168(a(n)). - R. J. Mathar, Oct 11 2017

Crossrefs

Cf. A037445, A049417, A126168, A127661.

Sequence in context: A172731 A330364 A230733 * A112665 A330933 A232390

Adjacent sequences: A293352 A293353 A293354 * A293356 A293357 A293358

Keyword

nonn

Author

Hans Havermann, Oct 07 2017

Status

approved