791337

Appears in sequences

• Triangle read by rows: T(n,k) is the number of ways to choose a k-dimensional subspace U of an n-dimensional vector space over GF(2) and then choose a subspace of U.at n=31A302595
• Number of unlabelled unary-binary trees with n nodes such that every node with two children has children of different subtree sizes.at n=17A335562