E.g.f.: d/dx Series_Reversion( Sum_{n>=0} (-x)^(3*n)/(3*n)! - exp(-x) ).
A199670
E.g.f.: d/dx Series_Reversion( Sum_{n>=0} (-x)^(3*n)/(3*n)! - exp(-x) ).
Terms
- a(0) =1a(1) =1a(2) =3a(3) =16a(4) =119a(5) =1134a(6) =13201a(7) =181594a(8) =2882061a(9) =51836302a(10) =1041959555a(11) =23148374886a(12) =563234624575
External references
- oeis: A199670