Number of unlabeled connected loopless multigraphs with n edges rooted at two noninterchangeable vertices.

A339042

Number of unlabeled connected loopless multigraphs with n edges rooted at two noninterchangeable vertices.

Terms

    a(0) =1a(1) =4a(2) =17a(3) =73a(4) =319a(5) =1423a(6) =6499a(7) =30374a(8) =145302a(9) =711177a(10) =3559690a(11) =18212192a(12) =95193547a(13) =508083746a(14) =2767835600a(15) =15382476029a(16) =87177582535a(17) =503610832756

External references