mobius of binomials

Emeric Deutsch deutsch at duke.poly.edu
Mon Feb 7 14:25:52 CET 2005


Paul: many thanks; all seqfans: sorry.
I just made a stupid mistake in my Maple program.
Emeric

> On Sun, 6 Feb 2005 16:33:37 -0500 (EST) Emeric Deutsch
> <deutsch at duke.poly.edu> writes:
> > Dear seqfans,
> > The values of n between 0 and 1000 for which 
> >         sum(mobius(binom(n,k),k=0..n))=0 
> > are 
> >           3,12,24,29,34,40  (not yet in OEIS).
> > For example mobius(1)+mobius(3)+mobius(3)+mobius(1)=1-1-1+1=0.
> > Is this a finite sequence?
> > Thanks.
> > Emeric
> 






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