31039008

Appears in sequences

• Number of genus 2 rooted maps with 1 face with n vertices.at n=6A006298
• a(n) = 21*(n+1)*binomial(n+4,9).at n=10A027805
• a(n) = 143*(n+1)*binomial(n+4,13)/2.at n=6A027809
• Triangle read by rows giving number of ways to glue sides of a 2n-gon so as to produce a surface of genus g.at n=32A035309
• Denominators of the Inverse Akiyama-Tanigawa transform of the aerated even-indexed Bernoulli numbers 1, 0, 1/6, 0, -1/30, 0, 1/42, ...at n=20A177690
• Triangle read by rows: T(n,f) is the number of rooted maps with n edges and f faces on an orientable surface of genus 2.at n=21A269922
• Triangle read by rows: T(n,f) is the number of rooted maps with n edges and f faces on an orientable surface of genus 2.at n=27A269922
• Triangle read by rows: T(n,g) is the number of rooted maps with n edges and 7 faces on an orientable surface of genus g.at n=8A270411
• a(n) is the number of rooted maps with n edges and 7 faces on an orientable surface of genus 2.at n=0A288087