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A324431 Number of labeled cyclic chord diagrams with n chords such that every chord has length at least five. 4
1, 0, 0, 0, 0, 1, 18, 381, 7601, 160784, 3621067, 87089383, 2235081950, 61129825519, 1778536033055, 54930050817476, 1796853497380257, 62110926582550043, 2263534922105574576, 86779223311878261139, 3492564794206986891273, 147269976213917444452508 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,7

LINKS

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

CROSSREFS

Column k=5 of A324428.

Sequence in context: A099276 A221348 A285400 * A070943 A252888 A159647

Adjacent sequences:  A324428 A324429 A324430 * A324432 A324433 A324434

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Feb 27 2019

STATUS

approved

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Last modified May 26 13:59 EDT 2022. Contains 354092 sequences. (Running on oeis4.)