Number of unsensed planar maps with n edges and without faces of degree 1.

A006389

Number of unsensed planar maps with n edges and without faces of degree 1.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =6a(4) =18a(5) =68a(6) =313a(7) =1592a(8) =9187a(9) =57451a(10) =384450a(11) =2703970a(12) =19769311

External references