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

franktaw at netscape.net franktaw at netscape.net
Wed Jul 25 15:34:31 CEST 2012

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" 

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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