Number of unsensed simple planar maps with n edges and without vertices of degree 1.
A006401
Number of unsensed simple planar maps with n edges and without vertices of degree 1.
Terms
- a(0) =1a(1) =0a(2) =0a(3) =1a(4) =1a(5) =2a(6) =5a(7) =10a(8) =28a(9) =86a(10) =285a(11) =1055a(12) =4211
External references
- oeis: A006401