Number of different Euler multigraphs with n edges, loops allowed.

A068590

Number of different Euler multigraphs with n edges, loops allowed.

Terms

    a(0) =1a(1) =3a(2) =6a(3) =16a(4) =34a(5) =90a(6) =213a(7) =572a(8) =1499a(9) =4231a(10) =12115a(11) =36660a(12) =114105

External references