Number of unicursal planar maps with n edges rooted at a vertex of odd valency (unicursal means that exactly two vertices are of odd valency; there is an Eulerian path).
A069731
Number of unicursal planar maps with n edges rooted at a vertex of odd valency (unicursal means that exactly two vertices are of odd valency; there is an Eulerian path).
Terms
- a(0) =1a(1) =5a(2) =28a(3) =168a(4) =1056a(5) =6864a(6) =45760a(7) =311168a(8) =2149888a(9) =15049216a(10) =106502144a(11) =760729600a(12) =5477253120a(13) =39710085120a(14) =289650032640
External references
- oeis: A069731