[seqfan] Re: Re 2 seqs with diffs distinct

[Benoît Jubin]

Nice sequences !

In the comments, you mention the "sequence" {a union b}.  Maybe it
would be worth adding it to the OEIS too.  And similarly for the set
of differences |a_i - b_j| (if it's not all of N) and/or its
complement.

The comments are also dated 20910 !

Benoit




On Sun, Apr 11, 2010 at 12:22 PM, N. J. A. Sloane <njas at research.att.com> wrote:
>
> Dear Seq Fans
>
> On March 27 I posed a question to the list, and several
> people responded.  The two sequences will be visible - in a few minutes -
> as A169677 and A169678.
> Thanks to everone who replied.
>
> Now that the sequences exist in the OEIS, we can ask: what
> are their properties?  (Rate of growth, relationship to
> other sequences, e.g. Ulam-type sequences, see Index to OEIS,
> etc.) The graphs are surprisingly irregular.
>
> Zak,  I believe you did a version using only primes?
> Will you please submit it now?
>
> Neil
>
>
>
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