Expansion of e.g.f.: (exp(x/(1-x)) - 1)^2.

A052838

Expansion of e.g.f.: (exp(x/(1-x)) - 1)^2.

Terms

    a(0) =0a(1) =0a(2) =2a(3) =18a(4) =158a(5) =1510a(6) =15962a(7) =186270a(8) =2385182a(9) =33290862a(10) =503277242a(11) =8193803926a(12) =142938943886

External references