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

A380801

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

Terms

    a(0) =1a(1) =2a(2) =16a(3) =206a(4) =3792a(5) =91402a(6) =2733376a(7) =97793334a(8) =4078001920a(9) =194355934802

External references