[seqfan] Re: Comment on A151750 [erratum]

[Max Alekseyev]

On Sun, Aug 2, 2009 at 6:14 AM,
peter.luschny<peter.luschny at googlemail.com> wrote:

> The problems in my original posting are somewhat harder.
> Ron Graham for example offers 1000$ for one of them.

As far as I know, Ron offered $1000 for each of the following proofs:
1) infiniteness of A030979
2) finiteness of A151750

btw, does anybody know how the bound 10^10000 was obtained in A151750 ?

This bound is also mentioned in the reference:
Mauldin, R. Daniel; Ulam, S. M.; Mathematical problems and games. Adv.
in Appl. Math. 8 (1987), 281-344.
http://www.math.unt.edu/~mauldin/papers/no62.pdf
but there is no indication of who and how derived it.

Regards,
Max