Expansion of e.g.f. x*(1-x)/(1-3*x).

A052700

Expansion of e.g.f. x*(1-x)/(1-3*x).

Terms

    a(0) =0a(1) =1a(2) =4a(3) =36a(4) =432a(5) =6480a(6) =116640a(7) =2449440a(8) =58786560a(9) =1587237120a(10) =47617113600

External references