On Thu, 2010-05-13 at 23:00 +0100, Jaime Villate wrote:
> (to obtain its formal series equivalent \sum a_nX^n, a_n being the
> > number of ways to pay n? using 1, 2 and 5? corners (no, there
> > is no such thing as a 5? corner, but there's a 5? banknote !)).
Oops, sorry; I did not read this part before my previous reply to your
message. Then the partial fractions expansion that I told you is not
what you need.
Regards,
Jaime