Smallest k>0 such that (3^n+k)*3^n-1 and (3^n+k)*3^n+1 are a twin prime pair.

Terms

a(0) =1a(1) =3a(2) =3a(3) =7a(4) =21a(5) =29a(6) =113a(7) =31a(8) =61a(9) =13a(10) =179a(11) =237a(12) =33a(13) =201a(14) =613a(15) =171a(16) =347a(17) =291a(18) =907a(19) =437a(20) =523a(21) =193a(22) =1039a(23) =729a(24) =567a(25) =231a(26) =1847a(27) =931a(28) =1023a(29) =821