Primes of the form m = 3^i + 3^j - 1, where i > j >= 0.

Terms

a(0) =3a(1) =11a(2) =29a(3) =83a(4) =89a(5) =107a(6) =251a(7) =269a(8) =809a(9) =971a(10) =2213a(11) =2267a(12) =6563a(13) =6569a(14) =6803a(15) =8747a(16) =19709a(17) =19763a(18) =20411a(19) =59051a(20) =65609a(21) =177173a(22) =183707a(23) =531521a(24) =538001a(25) =590489a(26) =1594331a(27) =1594403a(28) =1595051a(29) =1596509