A324445 Number of labeled cyclic chord diagrams with n chords such that the minimal chord length equals one.

1, 2, 11, 74, 652, 7069, 90946, 1353554, 22870541, 432424178, 9044698456, 207336529399, 5168830168426, 139221843251594, 4028994710377547, 124670425690921634, 4107486007743301396, 143555848444786921189, 5304751937400100397626, 206646474536314180818218

Offset: 1

Author

Alois P. Heinz, Feb 28 2019

Keywords

• nonn

Links

• Alois P. Heinz, Table of n, a(n) for n = 1..404

Crossrefs

Column k=1 of A324429.

Cf. A001147, A003436.

Formula

a(n) = A001147(n) - A003436(n).