[seqfan] Re: Reference that "A027687 4-perfect numbers" is finite

[Charles Greathouse]

Yes, it would be nice to be able to search for these things by
keyword. I've toyed with the idea of mimicking the CSS |= selector by
writing

fini-conj (or even fini-?)

which allows additional levels to be added if needed.

This doesn't obviate the need for comments, but allows for much easier
searching.

Charles Greathouse
Analyst/Programmer
Case Western Reserve University

On Wed, Jul 25, 2012 at 9:34 AM,  <franktaw at netscape.net> wrote:
> If we're going to have modified keywords, how about a "conj" modifier to
> indicate a conjectured keyword? Then these would be "fini(conj),full(conj)".
> This modifier would also apply to the "mult" keyword.
>
> It would be nice to also have a way to show that the infiniteness of a
> sequence is conjectured.
>
> Franklin T. Adams-Watters
>
> -----Original Message-----
> From: Georgi Guninski <guninski at guninski.com>
>
> On Mon, Jul 16, 2012 at 01:42:51PM +0400, Max Alekseyev wrote:
>>
>> I suspect that finiteness of A027687 is not proved but "extremly
>> probable" as stated at Achim Flammenkamp's page:
>> http://wwwhomes.uni-bielefeld.de/achim/mpn.html
>> (notice the difference between answers "yes and proved" and simply
>> "yes" in the column "Are all discovered?").
>>
>> The flag 'fini' is thus inappropriate.
>
>
> May be these should not be "fini" too:
>
> A046060                 5-multiperfect numbers.
> A046061                 6-multiperfect numbers.
>
>
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