170883

Appears in sequences

• Number of primitive (period n) bracelets using exactly three different colored beads.at n=13A056349
• Number of imprimitive (periodic) asymmetric rhythm cycles: ones having nontrivial shift automorphisms. Asymmetric rhythm cycles (A115114): binary necklaces of length 2n subject to the restriction that for any k if the k-th bead is of color 1 then the (k+n)-th bead (modulo 2n) is of color 0.at n=41A115116
• Number of unordered rooted trees where each subtree from given node has the same number of nodes.at n=37A127524