2012388736

Appears in sequences

• Number of labeled rooted connected graphs.at n=8A053549
• E.g.f. satisfies: L(x) = x*Sum_{n>=0} (1/n!)*Product_{k=0..n-1} L(2^k*x).at n=7A177777
• Triangular array read by rows: T(n,k) is the number of rooted labeled simple graphs on {1,2,...,n} such that the root is in a component of size k; n>=1, 1<=k<=n.at n=35A228315