[seqfan] Re: Generalizing Dirichlet, new sequences.
njasloane at gmail.com
Wed Nov 30 21:06:37 CET 2016
Richard, I think the first IS there, see A036570. But I will add the second
which will be A278583.
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.
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Email: njasloane at gmail.com
On Wed, Nov 30, 2016 at 1:52 PM, rkg <rkg at ucalgary.ca> wrote:
> I didn't find 13, 37, 157, 541, 877, ... in OEIS.
> It is a subseq of A068228 = A141122. Nor did I find
> 12, 36, 156, 540, 876, ... These are the values of n
> for which n+1 is prime, n+2 is twice a prime and
> n+3 is thrice a prime. The former sequence is
> primes p such that p+1 is twice a prime and p+2 is
> thrice a prime. Presumably infinite, though I
> don't know what generalizations there are for
> Dirichlet's theorem on primes in arithmetic prograssions.
> I'm skating on thin ice -- see A045753, A002822. R.
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