Expansion of e.g.f. -(sec(x) + tan(x))*LambertW(-x).
A306881
Expansion of e.g.f. -(sec(x) + tan(x))*LambertW(-x).
Terms
- a(0) =0a(1) =1a(2) =4a(3) =18a(4) =120a(5) =1100a(6) =13092a(7) =192360a(8) =3362128a(9) =68063760a(10) =1565077220a(11) =40275499264
External references
- oeis: A306881