A324430 Number of labeled cyclic chord diagrams with n chords such that every chord has length at least four.

1, 0, 0, 0, 1, 11, 159, 2488, 43169, 822113, 17066007, 384422661, 9357185385, 245099146171, 6881055868664, 206270437643247, 6578921849694561, 222533460191360229, 7959059236941486231, 300168498172776752829, 11907361524870216908385, 495692886834636282431752

Offset

0,6

Links

Alois P. Heinz, Table of n, a(n) for n = 0..404

Crossrefs

Column k=4 of A324428.

Sequence in context: A242008 A158512 A348151 * A326097 A135700 A205086

Adjacent sequences: A324427 A324428 A324429 * A324431 A324432 A324433

Keyword

nonn

Author

Alois P. Heinz, Feb 27 2019

Status

approved