[seqfan] Re: naive sequence generator

[Georgi Guninski]

On Tue, Jan 12, 2010 at 03:10:30PM -0500, Robert Munafo wrote:
> I tried putting in one of your "less ugly sequence" formulas, but couldn't
> get it to actually recompute the sequence based on the new formula. Is
> "sigma" A000203?
> 

yes, it is A000203.
in addition the implementation defines sigma(0)=0 and eulerphi(0)=0

which formula is causing troubles to retest it?