given formula = easy but doesnt work

[Wouter Meeussen]

indeed, it does.

Thanks a bundle. Shall we make it a "joint comment" on A007595 ?

Wouter.

----- Original Message -----
From: "Reiner Martin" <reinermartin at nyc.rr.com>
To: "Wouter Meeussen" <wouter.meeussen at pandora.be>; "Seqfan (E-mail)"
<seqfan at ext.jussieu.fr>
Sent: Saturday, August 03, 2002 6:18 PM
Subject: Re: given formula = easy but doesnt work


> The following seems to work:
> C_n / 2   if n is even
> ( C_n + C_((n-1)/2) ) / 2   if n is odd
>
> ----------------------------------------------
> Reiner Martin
> reinermartin at hotmail.com
> ----------------------------------------------
>
> ----- Original Message -----
> From: "Wouter Meeussen" <wouter.meeussen at pandora.be>
> To: "Seqfan (E-mail)" <seqfan at ext.jussieu.fr>
> Sent: Saturday, August 03, 2002 11:38 AM
> Subject: given formula = easy but doesnt work
>
>
> > ID Number: A007595 (Formerly M2681)
> > Sequence:  1,1,3,7,22,66,217,715,2438,8398,29414
> > (C_n + C_(n-1)/2 )/2, C = Catalan numbers (A000108).
> >
> > can't work 'cause C_(2^n-1) is odd, (usually).
> > So I can't see how to generate this sequence from the given formula.
> > Can anyone help me out, here?
> >
> >
> >
> > Have one that *does* work, but it's not Catalanish.
> >
> >
> > Wouter Meeussen
> > wouter.meeussen at pandora.be
> >
> >
> >
>
>
>