147570

Appears in sequences

• Number of rooted forests with n nodes in which each component contains at least two nodes.at n=15A174145
• G.f.: Product_{n>=0} 1/(1-a(n)*x^(n+1))^3 = Sum_{n>=0} a(n)*x^n.at n=7A203507
• Number of 3Xn arrays containing n copies of 0..3-1 with no element plus any diagonal or antidiagonal neighbor equal to 3-1.at n=7A266184
• a(n) = Sum_{k=0..n} binomial(2*n, n-k) * v(k), where v(k) is the number of overpartitions of n (A015128).at n=8A356289