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A242245 Number of rooted connected chord diagrams ordered by terminal chords lexicographically. 0
1, 3, 8, 15, 15, 30, 71, 105, 24, 51, 117, 180, 206, 315, 744, 945 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,2

LINKS

Table of n, a(n) for n=2..17.

Nicolas Marie, Karen Yeats, A chord diagram expansion coming from some Dyson-Schwinger equations, arXiv:1210.5457 [math.CO], (19-October-2012)

CROSSREFS

Sequence in context: A208436 A297015 A135872 * A045263 A004733 A310307

Adjacent sequences:  A242242 A242243 A242244 * A242246 A242247 A242248

KEYWORD

nonn,more

AUTHOR

Markus Hihn, May 09 2014

STATUS

approved

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Last modified May 24 21:58 EDT 2022. Contains 354043 sequences. (Running on oeis4.)