Number of labeled n-node 4-valent graphs containing a loop.

A058836

Number of labeled n-node 4-valent graphs containing a loop.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =60a(7) =1890a(8) =77280a(9) =3966480a(10) =251067600a(11) =19204305120

External references