OFFSET
0,1
REFERENCES
Richard K. Guy, Unsolved Problems in Number Theory, 3rd Edition, Springer, 2004, Section B6, pp. 92-95.
LINKS
Amiram Eldar, Table of n, a(n) for n = 0..3839 (terms 0..3568 from Robert G. Wilson v)
Christophe Clavier, Aliquot Sequences.
factordb.com, Aliquot sequence of 1134.
Robert G. Wilson v, terms n = 0..3568 with factorization.
Paul Zimmermann, Latest information.
FORMULA
a(n+1) = A001065(a(n)). - R. J. Mathar, Oct 11 2017
MATHEMATICA
f[n_] := DivisorSigma[1, n] - n; NestList[f, 1134, 100] (* Robert G. Wilson v, Dec 22 2012 *)
PROG
(PARI) a(n, a=1134)={for(i=1, n, a=sigma(a)-a); a} \\ M. F. Hasler, Feb 25 2018
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved