Primitive pseudo-powers to base 3.

Terms

a(0) =171a(1) =3249a(2) =13203a(3) =61731a(4) =97641a(5) =250857a(6) =354537a(7) =1172889a(8) =1855179a(9) =2152089a(10) =2354697a(11) =4766283a(12) =6736203a(13) =10970073a(14) =22284891a(15) =33894369a(16) =35248401a(17) =38265939a(18) =40889691a(19) =44739243