A275368 Numbers k such that A000032(k) + 2^k is a prime.

0, 1, 2, 4, 5, 7, 13, 22, 52, 53, 85, 175, 214, 223, 556, 631

Offset

1,3

Comments

Next term > 10^5. - Joerg Arndt, Jul 25 2016

Links

Table of n, a(n) for n=1..16.

Mathematica

Select[Range[0, 7000], PrimeQ[LucasL[#] + 2^#] &]

Prog

(Magma) [n: n in [1..7000] | IsPrime(Lucas(n)+2^n)];
(PARI) isok(n) = isprime(fibonacci(n-1)+fibonacci(n+1)+2^n); \\ Altug Alkan, Jul 25 2016

Crossrefs

Cf. A000032, A088859.

Sequence in context: A240842 A168540 A115008 * A332296 A115883 A063508

Adjacent sequences: A275365 A275366 A275367 * A275369 A275370 A275371

Keyword

nonn,more

Author

Vincenzo Librandi, Jul 25 2016

Status

approved