A324446 Number of labeled cyclic chord diagrams with n chords such that the minimal chord length equals two.

1, 3, 24, 225, 2489, 32326, 483968, 8211543, 155740501, 3265307342, 74995101843, 1872508994356, 50500982610620, 1463062187672336, 45314261742435296, 1494164679669072424, 52257665502536426741, 1932255827699763531474, 75312621088768346098203

Offset: 2

Author

Alois P. Heinz, Feb 28 2019

Keywords

• nonn

Links

• Alois P. Heinz, Table of n, a(n) for n = 2..404

Crossrefs

Column k=2 of A324429.

Cf. A003436, A306386.

Formula

a(n) = A003436(n) - A306386(n).