a(n) = Product_{k=0..n-1} (2*n+3*k).

A384163

a(n) = Product_{k=0..n-1} (2*n+3*k).

Terms

    a(0) =1a(1) =2a(2) =28a(3) =648a(4) =20944a(5) =869440a(6) =44089920a(7) =2641533440a(8) =182573036800

External references