235381
domain: N
Appears in sequences
- Number of unlabeled rooted trees with n nodes (or connected functions with a fixed point).at n=16A000081
- Inverse WEIGH transform of A038000.at n=30A038001
- Number of polyominoes with n cells that tile the plane by translation or by 180-degree rotation (Conway criterion).at n=14A075203
- Bisection of A000081 (even part).at n=8A100034
- Number of trivially-perfect graphs on n nodes.at n=14A123467
- Positive numbers y such that y^2 is of the form x^2+(x+41)^2 with integer x.at n=16A157257
- Irregular triangle read by rows: T(n,k), n >= 2, 1 <= k <= n/2, = number of rooted forests with n nodes and k trees, with at least two nodes in each tree.at n=56A174135