Number of rooted non-separable bi-Eulerian planar maps with 2n edges. Bi-Eulerian means all its vertices and faces are of even valency.
A069729
Number of rooted non-separable bi-Eulerian planar maps with 2n edges. Bi-Eulerian means all its vertices and faces are of even valency.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =8a(4) =54a(5) =442a(6) =4032a(7) =39706a(8) =413358a(9) =4487693a(10) =50348500a(11) =579994802a(12) =6827955072a(13) =81854670861a(14) =996529292432
External references
- oeis: A069729