11934910

Appears in sequences

• Number of rooted maps with n edges on the projective plane.at n=7A007137
• Triangle read by rows: T(n,k) = number of rooted maps with n edges on a nonorientable surface of genus k (1 <= k <= n).at n=28A267180
• Number of rooted maps of genus 1/2 with n edges.at n=7A361137