a(n) = A000984(n) * A081085(n).

A239226

a(n) = A000984(n) * A081085(n).

Terms

    a(0) =1a(1) =8a(2) =120a(3) =2240a(4) =47320a(5) =1084608a(6) =26330304a(7) =666631680a(8) =17419647960a(9) =466416716480

External references