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A324430 Number of labeled cyclic chord diagrams with n chords such that every chord has length at least four. 4
1, 0, 0, 0, 1, 11, 159, 2488, 43169, 822113, 17066007, 384422661, 9357185385, 245099146171, 6881055868664, 206270437643247, 6578921849694561, 222533460191360229, 7959059236941486231, 300168498172776752829, 11907361524870216908385, 495692886834636282431752 (list; graph; refs; listen; history; text; internal format)
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: A156933 A242008 A158512 * A326097 A135700 A205086

Adjacent sequences:  A324427 A324428 A324429 * A324431 A324432 A324433

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Feb 27 2019

STATUS

approved

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Last modified January 29 04:46 EST 2020. Contains 331335 sequences. (Running on oeis4.)