Ratio of (2n-1)! to number of zeros in upper part of Sylvester matrix of polynomial of degree n with all nonzero coefficients.

A138897

Ratio of (2n-1)! to number of zeros in upper part of Sylvester matrix of polynomial of degree n with all nonzero coefficients.

Terms

    a(0) =3a(1) =20a(2) =420a(3) =18144a(4) =1330560a(5) =148262400a(6) =23351328000

External references