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 0.
A269920
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 0.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =5a(5) =2a(6) =5a(7) =22a(8) =22a(9) =5a(10) =14a(11) =93a(12) =164a(13) =93a(14) =14a(15) =42a(16) =386a(17) =1030a(18) =1030a(19) =386a(20) =42a(21) =132a(22) =1586a(23) =5868a(24) =8885a(25) =5868a(26) =1586a(27) =132a(28) =429a(29) =6476
External references
- oeis: A269920