Binomial coefficients C(54,n).

Terms

a(0) =1a(1) =54a(2) =1431a(3) =24804a(4) =316251a(5) =3162510a(6) =25827165a(7) =177100560a(8) =1040465790a(9) =5317936260a(10) =23930713170a(11) =95722852680a(12) =343006888770