156092

Appears in sequences

• Consider the family of directed multigraphs enriched by the species of directed sets. Sequence gives number of those multigraphs with n labeled loops and arcs.at n=5A099694
• Number of isosceles triangles that can be formed from the n^2 points of n X n grid of points (or geoboard).at n=17A186434
• a(n) = G_n(5), where G_n(k) is the Goodstein function defined in A266201.at n=35A266204