OFFSET
0,2
FORMULA
a(n) = (n+1)!*[x^n] ( x/(2*x + log(1-x)) )^(n+2).
PROG
(PARI)
{a(n)=local(x=X+X^2*O(X^(n))); (n+1)!*polcoeff((x/(2*x+log(1-x)))^(n+2), n, X)}
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Apr 29 2006
STATUS
approved