A143930 Aliquot sequence starting at 3630.

3630, 5946, 5958, 6990, 9858, 10878, 15114, 18006, 18018, 34398, 61362, 90894, 90906, 93894, 93906, 124974, 153018, 178560, 457920, 1188000, 3529440, 9776160, 26028000, 69107040, 187267680, 478980000, 1268710560, 4065625440, 10164078720, 25833761280

Offset

0,1

Links

T. D. Noe, Table of n, a(n) for n = 0..2624 [complete sequence from Varona data file "SQ3630-to-1"]

Manuel Benito, Wolfgang Creyaufmüller, Juan L. Varona, and Paul Zimmermann, Aliquot Sequence 3630 Ends After Reaching 100 Digits, Experimental Mathematics, Vol. 11, No. 2, 2002, pp. 201-206.

Juan L. Varona, Aliquot Sequences

Formula

a(n+1) = A001065(a(n)). - R. J. Mathar, Oct 11 2017

Mathematica

NestList[DivisorSigma[1, #]-#&, 3630, 50] (* Paolo Xausa, Oct 16 2023 *)

Crossrefs

Cf. A001065.

Sequence in context: A329540 A223414 A046835 * A341264 A287219 A232120

Adjacent sequences: A143927 A143928 A143929 * A143931 A143932 A143933

Keyword

nonn,fini,full,look

Author

N. J. A. Sloane, Nov 30 2008

Status

approved