[seqfan] Re: Composite such that the number of non-divisors of n divides their sum

Don Reble djr at nk.ca
Wed Feb 12 20:59:19 CET 2014


> A230605
> Is there a better way to search for members of this sequence...?

    Exercise: prove that each member has a squared factor.
    (BTW, it's easy to prove that for the even members.)

-- 
Don Reble  djr at nk.ca



More information about the SeqFan mailing list