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A320605 Welschinger invariant for the number of real plane curves of degree d passing through 3*d-1 general points. 0
8, 240, 18264, 2845440, 792731520, 359935488000, 248962406889600 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,1

LINKS

Table of n, a(n) for n=3..9.

Aubin Arroyo, Erwan Brugalle, Lucia Lopez de Medrano, Recursive formulas for Welschinger invariants of the projective plane, arXiv:0809.1541 [math.AG], 2008-2010. See W2(k,0) numbers in 7.3 Some computations pp. 17-18.

Antoine Chambert-Loir, Quand la géométrie devient tropicale, Pour la Science, No 492, October 2018 (in French).

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

CROSSREFS

Cf. A013587.

Sequence in context: A221770 A007060 A319851 * A302005 A301778 A158263

Adjacent sequences:  A320602 A320603 A320604 * A320606 A320607 A320608

KEYWORD

nonn,more

AUTHOR

Michel Marcus, Oct 17 2018

STATUS

approved

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Last modified May 19 07:05 EDT 2019. Contains 323386 sequences. (Running on oeis4.)