[seqfan] Re: A154714

Benoît Jubin benoit.jubin at gmail.com
Thu Jan 15 13:25:36 CET 2009


On Thu, Jan 15, 2009 at 10:31 AM, Vladimir Reshetnikov
<v.reshetnikov at gmail.com> wrote:
> Hi,
>
> Can anybody calculate an upper bound for A154714(5)?
> I believe that finding the exact value is unrealistic.

I don't know if this helps but one has the formulas:
a(n+1)=f(n,a(n))
f(2,x)=2.x
f(3,x)=2^x.x
f(4,x)=product(b(k),k=0..x) where b(0)=0, b(m+1)=2^product(b(l),l=0..m)

Regards,
Benoit




>
> Thanks
> Vladimir
>
>
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