[seqfan] Re: A069585 n - largest prime power <= n

[Robert Munafo]

Agreed (with you both). I've replaced the question about consecutive
zeros with a relevant reference to A001597 and the now long-proven
Catalan conjecture; and fixed the data (and offset, which took a few
tries and might still be wrong).

--
  Robert Munafo, mrob27 at gmail.com

On Fri, May 10, 2024 at 5:43 PM <israel at math.ubc.ca> wrote:
> Normally, with an old sequence such as this we try to keep the Data
> and make sense of it by changing the Name.  But in this case I don't
> see any sense in it at all. I think we should correct the Data.
>
> On May 10 2024, Sean A. Irvine wrote:
> >Something seems off with A069585.
> >
> >https://oeis.org/A069585
> >
> >I messaged Amarnath, but did not yet receive a response, so perhaps someone
> >else can see what is wrong here.
> >
> >It looks like for the prime powers p^k that you require k>1 (otherwise
> >a(p)=0 should be 0 for every prime p), but then I do not understand why
> >a(2)=a(3)=0.
> >
> >Also, why are a(15)=0, a(24)=0. Is the indexing somehow off by 1?