a(n) = n^5*(n^9 + 1)/2.A168471a(n) = n^5*(n^9 + 1)/2.Terms a(0) =0a(1) =1a(2) =8208a(3) =2391606a(4) =134218240a(5) =3051759375a(6) =39182085936a(7) =339111544828External referencesoeis: A168471