A174046 Places n for which A001359(n) and A023200(n) is a twin prime pair.

2, 3, 4, 6, 14, 16, 29, 356, 358, 359, 403, 446, 464, 485, 652, 655, 764, 861, 866, 1123, 1301, 1304, 1324, 1328, 1358, 1486, 1610, 2631, 2632, 3735, 3931, 3953, 3956, 3957, 4679, 4855, 4931, 5222, 5226, 5269, 5283, 5292, 5403, 5427, 5445

Offset: 1

Author

Vladimir Shevelev, Mar 06 2010

Keywords

• nonn

Examples

			2 is in the sequence because A001359(2)=5 and A023200(2)=7 are twin primes.
		

Links

• Michel Marcus, Table of n, a(n) for n = 1..149

Crossrefs

Cf. A023200, A001359, A046132, A006512, A174042

Programs

PARI

lista(nn)  = {vp = primes(nn); va = select(x->isprime(x+2), vp); vb = select(x->isprime(x+4), vp); for (n=1, min(#va, #vb), if (vb[n] == va[n]+2, print1(n, ", ")););} \\ Michel Marcus, Jul 22 2017

Extensions

Terms beyond 29 from R. J. Mathar, Nov 03 2011

Edited by Michel Marcus, Jul 22 2017