A279208 Number of analytic chord diagrams with n chords, up to symmetry.

1, 2, 5, 17, 76, 499, 4132

Offset

1,2

Links

Table of n, a(n) for n=1..7.

Étienne Ghys, A Singular Mathematical Promenade, arXiv:1612.06373 [math.AG], 2016. See p. 252.

Crossrefs

Cf. A007769, A054499, A279207.

Sequence in context: A328439 A328504 A375631 * A099825 A014288 A330046

Adjacent sequences: A279205 A279206 A279207 * A279209 A279210 A279211

Keyword

nonn,more

Author

N. J. A. Sloane, Dec 23 2016

Status

approved