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

Author

Hans Havermann, Oct 07 2017

Keywords

• nonn

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)

Crossrefs

Cf. A037445, A049417, A126168, A127661.

Formula

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