Number of connected planar graphs with n nodes and even degrees (i.e., that are Eulerian).

A049365

Number of connected planar graphs with n nodes and even degrees (i.e., that are Eulerian).

Terms

    a(0) =1a(1) =0a(2) =1a(3) =1a(4) =3a(5) =7a(6) =21a(7) =81a(8) =401a(9) =2499a(10) =18604a(11) =158515a(12) =1464681a(13) =14305475

External references