[seqfan] Re: similarity in (avoided) upper-twin prime sequences A025584 A156828 A175073

[Robert Munafo]

Richard,

If you look at the definitions, it is pretty easy to relate A156828 to
A025584 (after the initial terms).

Regarding A175073, once again a deeper understanding is needed. Can you
prove a connection or find a counterexample? What approach do you think
would be productive?

On Tue, Jan 26, 2010 at 15:26, Richard Mathar <mathar at strw.leidenuniv.nl>
wrote:
> What is the common ground for these three:
>
> http://research.att.com/~njas/sequences/?q=id:A175073|id:A156828
>
3,11,17,23,29,37,41,47,53,59,67,71,79,83,89,97,101,107,113,127,131,137,149,157,163,167,173,179,191,197,211,223,227,233,239,251,257,263,269,277,281,293,307,
>
2,7,11,17,23,29,37,41,47,53,59,67,71,79,83,89,97,101,107,113,127,131,137,149,157,163,167,173,179,191,197,211,223,227,233,239,251,257,263,269,277,281,293,307,311,317,331,337,347,353,359,367,373,379,383,389,
>
> http://research.att.com/~njas/sequences/?q=id:A175073|id:A025584
>
3,11,17,23,29,37,41,47,53,59,67,71,79,83,89,97,101,107,113,127,131,137,149,157,163,167,173,179,191,197,211,223,227,233,239,251,257,263,269,277,281,293,307,
>
2,3,11,17,23,29,37,41,47,53,59,67,71,79,83,89,97,101,107,113,127,131,137,149,157,163,167,173,179,191,197,211,223,227,233,239,251,257,263,269,277,281,293,307,311,317,331,337,347,353,359,367,373,379,383,389,397,401,


--
 Robert Munafo  --  mrob.com