New sequences; comments on old; origin of problem?

Richard Guy rkg at
Wed Nov 30 23:54:31 CET 2005

Yes, I confused Derek with one of the students.
He is in fact one of the helpers!  There's only
one, as far as I know.   R.

On Wed, 30 Nov 2005, Jim Nastos wrote:

> On 11/30/05, Richard Guy <rkg at> wrote:
>> Derek Kisman, a high school student who is
>> one of a group we're training for the Olympiad,
>> has recently produced a complete and elegant
>> solution to the following problem.
>  Hi Professor Guy,
>  Is this it a coincidence or a mislabeling that Derek Kisman is a high
> school
> math Olympian? (Or perhaps outdated.)
>  I did my undergraduate with Derek Kisman at Waterloo, and he was a silver
> medalist at the 1996 Olympiad. He graduated in 2000, named Putnam fellow
> in 1999. Perhaps he is helping with Olympiad training, instead of being a
> part of
> the group being trained? Or perhaps there is a second Derek Kisman? :)
> Thanks,
> Jim Nastos

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