a(n) = 3rd elementary symmetric function of C(n,0), C(n,1), ..., C(n,[ n/2 ]).

A025137

a(n) = 3rd elementary symmetric function of C(n,0), C(n,1), ..., C(n,[ n/2 ]).

Terms

    a(0) =24a(1) =50a(2) =2310a(3) =6272a(4) =178024a(5) =564678a(6) =12712920a(7) =44769032a(8) =875575074a(9) =3327756016a(10) =59091497192a(11) =238167549440

External references