Number of "non-connected" chord diagrams of degree n.

A317184

Number of "non-connected" chord diagrams of degree n.

Terms

    a(0) =0a(1) =1a(2) =3a(3) =12a(4) =74a(5) =647a(6) =6961a(7) =89739a(8) =1337152a(9) =22609111a(10) =427604861a(11) =8945156182a(12) =205080060435

External references