Numbers k such that 5^k - 2 is prime.

Terms

a(0) =1a(1) =2a(2) =14a(3) =26a(4) =50a(5) =126a(6) =144a(7) =260a(8) =624a(9) =1424a(10) =10472a(11) =19784a(12) =24558a(13) =797390