A086303 Numbers n such that n+15 is prime.

2, 4, 8, 14, 16, 22, 26, 28, 32, 38, 44, 46, 52, 56, 58, 64, 68, 74, 82, 86, 88, 92, 94, 98, 112, 116, 122, 124, 134, 136, 142, 148, 152, 158, 164, 166, 176, 178, 182, 184, 196, 208, 212, 214, 218, 224, 226, 236, 242, 248, 254, 256, 262, 266, 268, 278, 292, 296

Offset: 1

Author

Giovanni Teofilatto, Aug 29 2003

Keywords

• easy
• nonn

References

• M. Cerasoli, F. Eugeni and M. Protasi, Elementi di Matematica Discreta, Bologna 1988
• Emanuele Munarini and Norma Zagaglia Salvi, Matematica Discreta, UTET, CittaStudiEdizioni, Milano 1997

Crossrefs

Cf. A089559.

Programs

PARI

is(n)=isprime(n+15) \\ Charles R Greathouse IV, Feb 20 2017

Formula

a(n)=2*A089559(n).

Extensions

Extended by Ray Chandler, Nov 29 2003