1118226

Appears in sequences

• Number of rooted toroidal maps with 2 faces, n vertices and no isthmuses.at n=16A006469
• Irregular array T(n,k) of the numbers of non-extendable (complete) non-self-adjacent simple paths incorporating each of a minimal subset of nodes within a square lattice bounded by rectangles with nodal dimensions n and 9, n >= 2.at n=27A214608