Numbers k such that (3*2^k - 1)^2 - 2 is prime.

Terms

a(0) =0a(1) =1a(2) =4a(3) =6a(4) =15a(5) =21a(6) =25a(7) =70a(8) =129a(9) =399a(10) =511a(11) =856a(12) =9574a(13) =14479a(14) =17649a(15) =27054a(16) =28296a(17) =32796a(18) =38176