OFFSET
1,2
COMMENTS
Where record values of sigma_3(n) occur. RECORDS transform of A001158.
Number of terms up to 10^n for n = 1, 2, ... are 10, 63, 264, 945, 2499, 6365, 12074, 27930, 51660, .... - Charles R Greathouse IV, Sep 02 2015
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..10000 (terms 1..1000 from T. D. Noe)
MATHEMATICA
mx = 0; t = {}; Do[u = DivisorSigma[3, n]; If[u > mx, mx = u; AppendTo[t, n]], {n, 1000}]; t
PROG
(PARI) list(lim)=my(v=List(), r, t); for(n=1, lim, t=sigma(n, 3); if(t>r, listput(v, n); r=t)); Vec(v) \\ Charles R Greathouse IV, Sep 02 2015
CROSSREFS
KEYWORD
nonn
AUTHOR
T. D. Noe, Aug 17 2011
STATUS
approved