[seqfan] Re: Integer Sequence Analysis in Mathematica 7
Eric W. Weisstein
eww at wolfram.com
Sat Nov 22 02:48:11 CET 2008
On Fri, 21 Nov 2008, Alexander Povolotsky wrote:
> Dear Maximilian,
>
> I was not talking ggf, I meant closed form analytical formula
>
> For example PURRS (The Parma University's Recurrence Relation Solver)
> http://www.cs.unipr.it/purrs/ yields the following:
This is perhaps a bit simpler :)
Table[
HypergeometricPFQ[{1/3 - n/3, 2/3 - n/3, -(n/3)}, {1/2 - n/2, 1 - n/2}, -(27/4)],
{n, 20}]
{1, 1, 4, 5, 6, 10, 15, 21, 31, 46, 67, 98, 144, 211, 309, 453, 664, 973, 1426, 2090}
-Eric
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