Numbers k such that (5^k + 2^k - 1)/12 is prime.
A155802
Numbers k such that (5^k + 2^k - 1)/12 is prime.
Terms
- a(0) =3a(1) =5a(2) =7a(3) =15a(4) =65a(5) =105a(6) =135a(7) =155a(8) =235a(9) =249a(10) =1407a(11) =1745a(12) =30207a(13) =40407a(14) =68115
External references
- oeis: A155802