Like A065759 but where f(n) = 2*n.

Terms

a(0) =5848a(1) =6884a(2) =58480a(3) =68840a(4) =394062a(5) =584800a(6) =688400a(7) =3940620a(8) =5848000a(9) =6884000a(10) =39406200a(11) =58480000a(12) =68840000