Integers k such that (2^k - 1) + (3^k - 1) + (5^k - 1) is prime.
A270817
Integers k such that (2^k - 1) + (3^k - 1) + (5^k - 1) is prime.
Terms
- a(0) =1a(1) =3a(2) =4a(3) =9a(4) =11a(5) =69a(6) =117a(7) =449a(8) =675a(9) =1119a(10) =1959a(11) =2687a(12) =2859a(13) =8001a(14) =8175a(15) =24269a(16) =110247
External references
- oeis: A270817