A219617 Numbers k such that 3^k + 2^k + 10 is prime.

2, 4, 8, 10, 12, 34, 50, 62, 100, 128, 284, 342, 984, 4172, 4334, 7004, 10282, 15580, 17442, 19548, 21422, 22528, 51752

Offset

1,1

Links

Table of n, a(n) for n=1..23.

Mathematica

Select[Range[2, 15000, 2], PrimeQ[3^# + 2^# + 10] &]

Prog

(PARI) is(n)=ispseudoprime(3^n+2^n+10) \\ Charles R Greathouse IV, Jun 13 2017

Crossrefs

Cf. A176928 (associated primes).

Sequence in context: A155133 A331669 A154788 * A100278 A075333 A297250

Adjacent sequences: A219614 A219615 A219616 * A219618 A219619 A219620

Keyword

nonn,more

Author

Vincenzo Librandi, Dec 01 2012

Extensions

a(16)-a(17) from Bruno Berselli, Dec 06 2012

a(18)-a(23) from Michael S. Branicky, Mar 21 2023

Status

approved