E.g.f.: exp(2*(1/(1-x)^2 - 1)).
A294189
E.g.f.: exp(2*(1/(1-x)^2 - 1)).
Terms
- a(0) =1a(1) =4a(2) =28a(3) =256a(4) =2848a(5) =37024a(6) =547936a(7) =9064192a(8) =165339904a(9) =3290839552a(10) =70870959616
External references
- oeis: A294189
A294189
E.g.f.: exp(2*(1/(1-x)^2 - 1)).