E.g.f.: Sum_{n>=0} (exp(3^n*x) - 1)^n/n!, an analog of the Bell numbers (A000110).
A168408
E.g.f.: Sum_{n>=0} (exp(3^n*x) - 1)^n/n!, an analog of the Bell numbers (A000110).
Terms
- a(0) =1a(1) =3a(2) =90a(3) =21897a(4) =46281375a(5) =882516062106
External references
- oeis: A168408