Number of different (unlabeled) 2-cell embeddings of the n-wheel graph W_(n+1) on n+1 nodes into orientable surfaces.

A069840

Number of different (unlabeled) 2-cell embeddings of the n-wheel graph W_(n+1) on n+1 nodes into orientable surfaces.

Terms

    a(0) =16a(1) =80a(2) =666a(3) =6588a(4) =80886a(5) =1146916a(6) =18583160a(7) =337808300a(8) =6812539360a(9) =150922350288

External references