Expansion of e.g.f.: -LambertW(-x) / LambertW(x).
A215882
Expansion of e.g.f.: -LambertW(-x) / LambertW(x).
Terms
- a(0) =1a(1) =2a(2) =4a(3) =26a(4) =160a(5) =2002a(6) =21184a(7) =395866a(8) =5980160a(9) =149083874a(10) =2933576704a(11) =91549564570
External references
- oeis: A215882