[seqfan] Re: Integer Sequence Analysis in Mathematica 7
Alexander Povolotsky
apovolot at gmail.com
Sat Nov 22 02:52:52 CET 2008
>Table[ HypergeometricPFQ[{1/3 - n/3, 2/3 - n/3, -(n/3)}, {1/2 - n/2, 1 - n/2}, -(27/4)],
>{n, 20}]
But above is "computing formula", not closed form analytical formula ?
On Fri, Nov 21, 2008 at 8:48 PM, Eric W. Weisstein <eww at wolfram.com> wrote:
> 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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