61708

Appears in sequences

• Consider the family of directed multigraphs enriched by the species of involutions. Sequence gives number of those multigraphs with n labeled arcs.at n=5A099699
• Number of integer compositions of n in which the least part appears more than once.at n=16A363224
• Irregular triangle read by rows: T(n,k) is the number of n X n binary matrices containing k South-East paths of 1's connecting the top left and bottom right corners.at n=13A380392