Powers of 3 written in base 5.

Terms

a(0) =1a(1) =3a(2) =14a(3) =102a(4) =311a(5) =1433a(6) =10404a(7) =32222a(8) =202221a(9) =1112213a(10) =3342144a(11) =21132042a(12) =114001231a(13) =402004243a(14) =2211023334a(15) =12133131112a(16) =42004443341a(17) =231024441123