-3943

Appears in sequences

• a(n) = (-1)^n * Sum_{i=0..n} binomial(n+1,i+1)*Catalan(i).at n=7A050511
• Matrix inverse of triangle A063967.at n=37A091698
• L.g.f.: log(Product_{k>=1} 1/(1 - x^k/(1 + x))) = Sum_{k>=1} a(k)*x^k/k.at n=16A307675