0,2

In Maple notation, a(0)=1, a(n)= sum(stirling2(n, k)*k!*LaguerreL(k, -1), k=1..n), n=1, 2... . E.g.f.: exp((exp(x)-1)/(2-exp(x)))/(2-exp(x))

Cf. A021009.

Sequence in context: A033917 A004103 A111545 this_sequence A124405 A141787 A047852

Adjacent sequences: A070072 A070073 A070074 this_sequence A070076 A070077 A070078

nonn

Karol A. Penson (penson(AT)lptl.jussieu.fr), Apr 22 2002