Binomial coefficients C(63,n).

Terms

a(0) =1a(1) =63a(2) =1953a(3) =39711a(4) =595665a(5) =7028847a(6) =67945521a(7) =553270671a(8) =3872894697a(9) =23667689815a(10) =127805525001a(11) =615790256823