A087505 Numbers k such that 5*k+3 is a prime.

0, 2, 4, 8, 10, 14, 16, 20, 22, 32, 34, 38, 44, 46, 52, 56, 58, 62, 70, 74, 76, 86, 88, 92, 100, 104, 112, 118, 122, 128, 130, 134, 136, 146, 148, 154, 164, 170, 172, 176, 190, 196, 202, 206, 212, 218, 220, 224, 230, 232, 238, 242, 244, 256, 260, 274, 284, 286

Offset: 1

Author

Giovanni Teofilatto, Nov 04 2003

Keywords

• nonn
• easy

Examples

			10 is a term as 5*10 + 3 = 53 is prime. - _David A. Corneth_, Nov 11 2019
		

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

Links

• Daniel Starodubtsev, Table of n, a(n) for n = 1..10000

Programs

PARI

is(n) = isprime(5*n+3) \\ David A. Corneth, Nov 11 2019

Extensions

Corrected and extended by Ray Chandler, Nov 08 2003