1666664

Appears in sequences

• Number of asymmetric types of (3,n)-hypergraphs without isolated nodes, under action of symmetric group S_3; asymmetric n-covers of an unlabeled 3-set.at n=27A055538
• Integers without 0 as a digit, with an odd number of digits, that are not repdigits, and such that the 2 products [d_1 d_2...dk]*[d_k+1 d_k+2...d_2k+1] and [d_1 d_2...d_k+1]*[d_k+2 d_k+2...d_2k+1] are equal.at n=11A385145