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A319851 Welschinger Invariants. 0
1, 1, 8, 240, 18264, 2845440, 792731520 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

a(n) is the Welschinger invariant #n.

LINKS

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

Erwan Brugallé, Géométries énumératives complexe, réelle et tropicale, Journées mathématiques X-UPS, École polytechnique, 2008. See Table 3, p. 54.

I. Itenberg, V. Kharlamov & E. Shustin, Welschinger invariant and enumeration of real rational curves, Int. Math. Res. Not. (2003), no. 49, pp. 2639-2653.

I. Itenberg, V. Kharlamov & E. Shustin, Welschinger invariant and enumeration of real rational curves, arXiv:math/0303378 [math.AG], 2003.

I. Itenberg, V. Kharlamov & E. Shustin, Logarithmic equivalence of the Welschinger and the Gromov-Witten invariants, Uspekhi Mat. Nauk 59 (2004), no. 6(360), pp. 85-110.

I. Itenberg, V. Kharlamov & E. Shustin, Logarithmic equivalence of the Welschinger and the Gromov-Witten invariants, arXiv:math/0407188 [math.AG], 2004.

CROSSREFS

Cf. A013587.

Sequence in context: A067360 A221770 A007060 * A320605 A302005 A301778

Adjacent sequences:  A319848 A319849 A319850 * A319852 A319853 A319854

KEYWORD

nonn,more

AUTHOR

Georges Perrotte, Sep 29 2018

STATUS

approved

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Last modified May 19 17:08 EDT 2019. Contains 323395 sequences. (Running on oeis4.)