Number of digits in 3^(n!).

Terms

a(0) =1a(1) =1a(2) =1a(3) =3a(4) =12a(5) =58a(6) =344a(7) =2405a(8) =19238a(9) =173138a(10) =1731378a(11) =19045154a(12) =228541845a(13) =2971043978a(14) =41594615682a(15) =623919235225