[seqfan] Re: Reproducing A002771 skew determinants

[Olivier Gerard]

On Tue, Aug 19, 2014 at 12:46 AM, Sean A. Irvine <sairvin at gmail.com> wrote:

> To answer my own question, have now found the formula to generate
> A002771 after looking at A002772 (it is given on pg. 278 of vol 4 of
> Muir:
>
>
> s:=n->sum(binomial(n,2*k)*doublefactorial(2*k-1)*(1+doublefactorial(2*k-1))/2,k=0..floor(n/2));
>
> [...]
>
> I'll update the entry accordingly.

Sean.
>
>
Do not forget to create an OEIS entry for the other sequence.

Olivier