[seqfan] Re: Empirical relation for A180169: Sigma(A180162(n)), where A180162(n) is the smallest N such that sigma(N) is an nth power, or 0 if no such N can be found
simon.plouffe at gmail.com
Fri Feb 25 16:59:32 CET 2011
for A180169, I have this
generating function :
It has a score of 8.34 and it matches all the
terms in the sequence.
I checked the series and the 468'th term and they do match.
I would say that this generating functions has good chances
to be the good one.
My I add it to the sequence formulas ?
More information about the SeqFan