39872

Appears in sequences

• Triangle read by rows: T(n,k) is the number of noncrossing trees with n edges and k leaves.at n=38A091320
• G.f.: A(x) = exp( 2*Sum_{n>=1} 2^n/A006519(n) * x^n/n ), where A006519(n) = highest power of 2 dividing n.at n=13A162588
• Row sums of the array A274196, defined by g(n,k) = 1 for n >= 0; g(n,k) = 0 if k > n; g(n,k) = g(n-1,k-1) + g(n-1,4k) for n > 0, k > 1.at n=49A274197
• Number of non-symmetric binary n X n matrices M over the reals such that M^2 is the transpose of M.at n=9A336174