Numbers m such that 4*3^m + 1 is prime.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =6a(5) =14a(6) =15a(7) =39a(8) =201a(9) =249a(10) =885a(11) =1005a(12) =1254a(13) =1635a(14) =3306a(15) =3522a(16) =9602a(17) =19785a(18) =72698a(19) =233583a(20) =328689a(21) =537918a(22) =887535a(23) =980925a(24) =1154598a(25) =1499606a(26) =1936890a(27) =2016951a(28) =2143374