131307

Appears in sequences

• Numbers of rooted hypermaps on the torus with n darts (darts are semi-edges in the particular case of ordinary maps).at n=5A118093
• a(n) = 1 + 85*n + 2232*n^2 + 15276*n^3.at n=1A167190
• Triangle read by rows: T(n,k) is the number of rooted hypermaps of genus k with n darts.at n=17A321710