Number of forests with two connected components in the complete graph K_{n}.

A083483

Number of forests with two connected components in the complete graph K_{n}.

Terms

    a(0) =0a(1) =1a(2) =3a(3) =15a(4) =110a(5) =1080a(6) =13377a(7) =200704a(8) =3542940a(9) =72000000a(10) =1656409535a(11) =42568187904

External references