Integers n such that either 2^n * prime(n) + 3 or 2^n * prime(n) - 3 is prime.

Terms

a(0) =1a(1) =3a(2) =4a(3) =5a(4) =6a(5) =7a(6) =8a(7) =9a(8) =12a(9) =17a(10) =18a(11) =19a(12) =21a(13) =23a(14) =25a(15) =33a(16) =34a(17) =37a(18) =39a(19) =41a(20) =46a(21) =52a(22) =55a(23) =58a(24) =60a(25) =66a(26) =91a(27) =126a(28) =158a(29) =191