[seqfan] Re: About A000108

[Emeric Deutsch]

> It seems that your formula is obtained at once from the
well-known formula (definition)
2n(2n-1)...(n+2)(n+1)n(n-1)...3.2
/{(n+1)n(n-1)...3*2*n(n-1)...3*2}
by canceling the product (n+1)n(n-1)...3.2.
Emeric Deutsch 



> Does anyone known the formula I am proposing to include
> there about Catalan-Segner numbers?, It catches my
> attention  when after being found some terms of such
> sequence with the proposed formula, I realized it doesn't
> appears to be already documented in the database entry.
> 
> With regards,
> 
> Remy.
> 
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