A087313 a(n) is the smallest integer > 1 of the form sum_{i = 1..n} x^(1/i)/n.

2, 3, 255, 1046, 230584301136334848, 7065193045869401568154708608

Offset

1,1

Comments

x is given by A106441(n)^A003418(n).

Links

Table of n, a(n) for n=1..6.

Example

a(3) = [x+x^(1/2)+x^(1/3)]/3 for x = 3^6, i.e. a(3) =
(729+27+9)/3 = 255.

Crossrefs

Sequence in context: A355962 A037059 A302398 * A004876 A307212 A177505

Adjacent sequences: A087310 A087311 A087312 * A087314 A087315 A087316

Keyword

nonn,easy

Author

Amarnath Murthy, Sep 03 2003

Extensions

Edited and extended by David Wasserman, May 02 2005

Next term has 355 digits.

Status

approved