Numbers k such that (k^2 + k + 1)/13 is prime.

Terms

a(0) =9a(1) =29a(2) =35a(3) =42a(4) =48a(5) =113a(6) =120a(7) =126a(8) =152a(9) =185a(10) =204a(11) =224a(12) =237a(13) =243a(14) =276a(15) =302a(16) =308a(17) =321a(18) =341a(19) =386a(20) =399a(21) =419a(22) =432a(23) =477a(24) =503a(25) =510a(26) =516a(27) =542a(28) =549a(29) =588