Sign of A062778

[Christian G.Bower]

I think the purpose of the nonn and sign keywords is database internal:
they let you know about the absence or presence of %V, %W and %X lines
in the internal format.  Thus any sequence whose visible portion contains
only nonnegative integers gets the nonn keyword regardless of what
happens later on.

Although, it would be interesting to settle the question about whether
this sequence actually is nonnegative.

Christian

------ Original Message ------
From: franktaw at netscape.net
To: seqfan at ext.jussieu.fr
Subject: Sign of A062778

> Sequence A062778 (Mobius transform of prime pi function) has the nonn
keyword, and it certainly seems to be entirely non-negative (I checked up to
2400; after 210, the minimum value is 8).  However, it isn't entirely obvious.
 Can anybody prove it?
>  
> Franklin T. Adams-Watters