[seqfan] Re: https://oeis.org/A254211 Finite?

[Neil Sloane]

Just to clarify the definition:
These are vectors [u_1 ... u_n] such that
(i)   u_i = 1,2 or 3
(ii)  u_i != u_{i+1}
(iii) Sum_{i=1..k} u_i != prime for k=1..n
(iv) Sum_{i=k..n} u_i != prime for k=2..n
- is that right?

Best regards
Neil

Neil J. A. Sloane, President, OEIS Foundation.
11 South Adelaide Avenue, Highland Park, NJ 08904, USA.
Also Visiting Scientist, Math. Dept., Rutgers University, Piscataway, NJ.
Phone: 732 828 6098; home page: http://NeilSloane.com
Email: njasloane at gmail.com


On Mon, Jan 26, 2015 at 9:12 PM, Ron Hardin <rhhardin at att.net> wrote:

> The numbers for https://oeis.org/A254211 suggest that it might be finite
> but I have no insight on the matter.
>
>
> Number of length n 1..(1+2) arrays with no leading or trailing partial sum
> equal to a prime and no consecutive values equal
>
> rhhardin at mindspring.com
> rhhardin at att.net (either)
>
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