OFFSET
1,2
LINKS
Tyler Busby, Table of n, a(n) for n = 1..106
FORMULA
EXAMPLE
a(3) = tau(321) = 4.
MATHEMATICA
s = ""; Do[s = ToString[n] <> s; Print[DivisorSigma[0, ToExpression[s]]], {n, 1, 45}] (* Ryan Propper, Sep 23 2005 *)
Table[DivisorSigma[0, FromDigits[Flatten[IntegerDigits/@Range[n, 1, -1]]]], {n, 50}] (* The program takes a long time to run. *) (* Harvey P. Dale, Jun 06 2018 *)
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Amarnath Murthy, Aug 11 2005
EXTENSIONS
More terms from Ryan Propper, Sep 23 2005
a(46)-a(66) from Jinyuan Wang, May 23 2020
STATUS
approved