A243367 Primes p such that p^2+10 is prime.

3, 7, 11, 13, 31, 53, 59, 71, 83, 97, 101, 127, 151, 157, 179, 181, 211, 223, 227, 239, 311, 367, 379, 449, 487, 521, 599, 601, 613, 619, 631, 743, 773, 809, 827, 883, 977, 1009, 1021, 1039, 1091, 1093, 1103, 1117, 1193, 1201, 1217, 1249, 1427, 1471, 1481, 1483, 1487, 1567

Offset: 1

Author

Zak Seidov, Jun 04 2014

Keywords

• nonn

Crossrefs

Cf. A182475.

Programs

PARI

isok(p) = isprime(p) && isprime(p^2+10); \\ Michel Marcus, Jun 04 2014

Formula

a(n) = sqrt(A182475(n)-10).