A217132 Numbers n such that 7^n + 10 is prime.

0, 1, 2, 3, 4, 6, 7, 11, 26, 29, 41, 53, 55, 84, 86, 144, 179, 229, 238, 414, 616, 1158, 4111, 5577, 13237, 15244, 48578, 66074

Offset: 1

Author

Vincenzo Librandi, Oct 01 2012

Keywords

• nonn

Comments

a(29) > 10^5. - Robert Price, Jan 24 2014

Crossrefs

Cf. A236371, A217131, A191469, A090669, A096305, A217130, A217132, A152213.

Programs

Mathematica

Select[Range[0, 3000], PrimeQ[7^# + 10] &]

PARI

for(n=1, 3*10^3, if(isprime(7^n+10), print1(n", ")))

Extensions

a(23)-a(28) from Robert Price, Jan 24 2014