[seqfan] Re: doubtful relevance
Robert Munafo
mrob27 at gmail.com
Sun Jan 24 01:22:51 CET 2010
I kind of think anything that has had that much thought put into it is sort
of self-evidently worthy. But also, based on NJAS's recent request, waiting
for the Wiki might be good. I submitted some mainly because I already had
reserved A-numbers and because I had posted them in detail here on this list
during the past several weeks.
On Sat, Jan 23, 2010 at 19:09, Alonso Del Arte <alonso.delarte at gmail.com>wrote:
> Well, Wouter, for what it's worth, I think you should submit that sequence,
> but perhaps put it in a list of sequences to submit once the transition to
> the wiki is complete. The powers of 3, whether in sequence or scrambled,
> turn up surprisingly in a few different contexts, even when the explanation
> turns out to seem rather mundane. I would bet money that lots of people, in
> the course of investigating various problems, will come up with various
> sequences of powers of 3.
>
> On Sat, Jan 23, 2010 at 9:59 AM, wouter meeussen <
> wouter.meeussen at pandora.be
> > wrote:
> > [...]
> > Firstly, I put myself the problem of calculating <Y(1,0)^n , Y(n,0)>^2
> > efficiently.
> > Here the bra-ket notation < .. , .. > symbolises
> > Integrate[ SphericalHarmonicY[1,0,th,fi]^n *
> > SphericalHarmonicY[n,0,th,-1*fi] Sin[th],{th,0,Pi},{fi,0,2Pi}]
> > [...]
>
--
Robert Munafo -- mrob.com
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