Primes that divide 2^(3^n)+1 for some n.

Terms

a(0) =3a(1) =19a(2) =163a(3) =1459a(4) =17497a(5) =52489a(6) =87211a(7) =135433a(8) =139483a(9) =1220347a(10) =5419387a(11) =6049243a(12) =28934011a(13) =86093443a(14) =227862073a(15) =272010961