OFFSET
1,3
EXAMPLE
L.g.f.: A(x) = x + x^2/2 + 4*x^3/3 + 17*x^4/4 + 91*x^5/5 + 574*x^6/6 +...
exp(A(x)) = 1 + x + x^2 + 2*x^3 + 6*x^4 + 24*x^5 + 120*x^6 +...
PROG
(PARI) {a(n)=polcoeff(x*deriv(log(Ser(concat(1, vector(n+1, k, (k-1)!))))), n)}
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Jun 11 2008
STATUS
approved