Similarity of A000799 & A064355

[zak seidov]

Dear 
Max, Frank, SeqFans,

Please, somethmes messages here are
a kind of chat (even of personal character).
Why not to restrict ourselves
and send personal messages only to persons involved.

I'm awfully sorry
being forced to send such a message.

With sincere admiration to all SeqFans,
Zak

--- Max <maxale at gmail.com> wrote:

> On 2/14/06, franktaw at netscape.net
> <franktaw at netscape.net> wrote:
> 
> > The converse is really easy enough.  For any
> number not in one of these
> > forms, the largest (absolute) two terms of the sum
> total less than 2^n - n.
> > The next term (if there is one) is also negative,
> and since the absolute
> > values of the remaining terms sum to less than the
> absolute value of that
> > term (all terms have absolute value a power of
> two), the sum is overall less
> > than 2^n - n, so A064355(n) <= 2^n/n - 1.
> 
> I'm confused by the terminology.
> What terms and sums do you consider?
> And how they can be negative taking into account
> that
> A064355(n) is defined as the number of subsets
> {1,2,..n} which sum to 1 mod n.
> (I do not see anything negative here)
> 
> Thanks,
> Max
> 
> 


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