[seqfan] Re: Extending erroneous A094333 ?

[Sean A. Irvine]

Hi Paul,

Are you arguing that a concatenation of a single number (e.g. a(2)=2)
should not be allowed?

I think I agree, the sequence as it stands is a little weird, because
given a(4)=8, I could argue on the same basis that a(2)=2 that a(5)=16
(with 16 the concatenation of the single number "16").

Sean.

On 07/23/13 04:19, Paul Tek wrote:
> Dear SeqFans,
>
> I would like to extend the sequence A094333:
>    NAME:   a(1) = 1, a(n) = least multiple of a(n-1) which is a concatenation of successive numbers.
>    DATA:   1, 2, 4, 8, 56, 5152, 17181920, 479839479840, 552587148319552587148320
>
> Obviously, a(2) and the following terms are wrong.
> I think we should have:
>     a(2)=12
>     a(3)=456
>     a(4)=415416
>     a(5)=194191194192
>     a(6)=3816727961538167279616
>     a(7)=35270249819024056401913527024981902405640192
>     ...
>
> My question is: should I fix A094333 or should I submit an new sequence ?
>
> Regards,
>
> Paul
> -----------------------------------------------------
> Mail.be, WebMail and Virtual Office
> http://www.mail.be
>
> _______________________________________________
>
> Seqfan Mailing list - http://list.seqfan.eu/
> .
>