Numbers k such that 5^k + 6 is prime.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =4a(5) =13a(6) =88a(7) =177a(8) =184a(9) =297a(10) =304a(11) =310a(12) =562a(13) =892a(14) =1300a(15) =4047a(16) =5557a(17) =9028a(18) =15597a(19) =28527a(20) =56890a(21) =77485a(22) =79378