Number of unrooted bipartite n-edge maps in the plane (planar with a distinguished outside face).
A103940
Number of unrooted bipartite n-edge maps in the plane (planar with a distinguished outside face).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =18a(5) =72a(6) =368a(7) =1982a(8) =11514a(9) =69270a(10) =430384a(11) =2736894a(12) =17752884a(13) =117039548a(14) =782480424a(15) =5294705752a(16) =36206357114a(17) =249894328848
External references
- oeis: A103940