[seqfan] Re: Linear recurrence and g.f. in A099458
Olivier Gerard
olivier.gerard at gmail.com
Thu Nov 22 22:49:44 CET 2012
Dear Richard,
The g.f. is
(1 - x^4)/(1 - 4 x + 7 x^2 - 4 x^3 + x^4)
instead of
1/(1 - 4 x + 7 x^2 - 4 x^3 + x^4)
where
1 - 4 x + 7 x^2 - 4 x^3 + x^4
is the Alexander "polynomial" of 9_44 multiplied by x^2
Regards,
Olivier
On Thu, Nov 22, 2012 at 9:45 PM, mathar <mathar at mpia-hd.mpg.de> wrote:
> Can someone resolve the discrepancy between the terms of
> http://oeis.org/A099458
> and the generating function in the formula?
>
> Richard
>
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