a(n) = n*11^n + 1.

Terms

a(0) =1a(1) =12a(2) =243a(3) =3994a(4) =58565a(5) =805256a(6) =10629367a(7) =136410198a(8) =1714871049a(9) =21221529220a(10) =259374246011