256116
domain: N
Appears in sequences
- Number of genus 1 rooted maps with 3 faces with n vertices.at n=3A006296
- Number of rooted genus-1 maps with n edges.at n=5A006297
- a(n) is the smallest number m such that for the n-digit number s=10^(n-1)+ m, 10*s+1, 10*s+3, 10*s+7 and 10*s+9 are primes.at n=19A097639
- 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 1.at n=17A269921
- 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 1.at n=18A269921
- Triangle read by rows: T(n,g) is the number of rooted maps with n edges and 3 faces on an orientable surface of genus g.at n=10A270407
- Triangle read by rows: T(n,g) is the number of rooted maps with n edges and 4 faces on an orientable surface of genus g.at n=7A270408
- a(n) is the number of rooted maps with n edges and 4 faces on an orientable surface of genus 1.at n=2A288071