Numbers k such that k*3^k + 1 is prime.

Terms

a(0) =2a(1) =8a(2) =32a(3) =54a(4) =114a(5) =414a(6) =1400a(7) =1850a(8) =2848a(9) =4874a(10) =7268a(11) =19290a(12) =337590a(13) =1183414