A172053 n-th nonnegative number k such that neither 6*k+-1 is prime plus n-th number m such that 6*m+-1 are both twin primes.

1, 22, 27, 36, 41, 46, 53, 65, 68, 77, 82, 99, 103, 112, 124, 128, 134, 139, 149, 162, 176, 183, 193, 206, 225, 232, 237, 243, 249, 276, 282, 287, 293, 301, 330, 339, 346, 351, 358, 371, 385, 402, 405, 408, 413, 434, 443, 454, 457, 479, 482, 497, 505, 510, 522

Offset: 1

Author

Juri-Stepan Gerasimov, Jan 24 2010

Keywords

• nonn

Crossrefs

Cf. A002822, A171696.

Formula

a(n)=A171696(n)+A002822(n).

Extensions

Entries checked by R. J. Mathar, May 22 2010