[seqfan] Re: Q on multiplicative functions
charles.greathouse at case.edu
Mon Feb 7 15:56:21 CET 2011
To avoid duplication of effort:
A151764 is completely multiplicative. I edited the sequence
A163659 and A160467 appear to be multiplicative but I haven't proved
it. The first 10,000 terms are multiplicative.
I don't understand A157261 or A159631.
Case Western Reserve University
On Mon, Feb 7, 2011 at 8:58 AM, Richard Mathar
<mathar at strw.leidenuniv.nl> wrote:
> Are these multiplicative functions?
> <a href="http://oeis.org/A151764">A151764</a>
> This is a repeated application of a multiplicative function
> <a href="http://oeis.org/A157261">A157261</a>
> lengths of blocks of 2 in Gijswijt's sequence
> <a href="http://oeis.org/A159631">A159631</a>
> <a href="http://oeis.org/A159634">A159634</a> 1 ?
> dimension of a space of modular forms
> <a href="http://oeis.org/A160467">A160467</a>
> 2 to some power involving sigma() and oddness
> (this might be a product of two multiplicative functions...)
> <a href="http://oeis.org/A163659">A163659</a>
> Defined as a logarithmic g.f. of Stern's diatomic series
> I am asking because they do not have the keyword:mult yet.
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