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

1,3

Comments

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

Links

Table of n, a(n) for n=1..28.

Mathematica

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

Prog

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

Crossrefs

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

Sequence in context: A301512 A091336 A002235 * A239014 A030705 A305929

Adjacent sequences: A217129 A217130 A217131 * A217133 A217134 A217135

Keyword

nonn

Author

Vincenzo Librandi, Oct 01 2012

Extensions

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

Status

approved