Numbers n such that 7*3^n + 2 is prime.

Terms

a(0) =1a(1) =3a(2) =4a(3) =31a(4) =33a(5) =76a(6) =196a(7) =319a(8) =405a(9) =591a(10) =2028a(11) =2140a(12) =4039a(13) =5745a(14) =16629a(15) =18061a(16) =20265a(17) =54129a(18) =119712