a(n) = n!*n^3.

Terms

a(0) =0a(1) =1a(2) =16a(3) =162a(4) =1536a(5) =15000a(6) =155520a(7) =1728720a(8) =20643840a(9) =264539520a(10) =3628800000a(11) =53129260800a(12) =827714764800