%I #8 Jun 22 2021 09:16:01
%S 1,5,2,35,-140,986,-6643,48248,-362700,2802510,-22098991,177116726,
%T -1438544962,11814206036,-97940651274,818498739637,-6888195294592,
%U 58324130994782,-496519067059432,4247266246317414,-36488059346439524
%N Coefficients in Göttsche's universal power series B_2(q) arising from enumeration of d-nodal curves in a linear system of dimension d on an algebraic surface.
%C The power series appears to be well defined, only the interpretation is conjectural.
%C Now proved by Tzeng. - _Andrey Zabolotskiy_, Jun 22 2021
%H Lothar Göttsche, <a href="https://doi.org/10.1007/s002200050434">A conjectural generating function for numbers of curves on surfaces</a>, Communications in mathematical physics 196.3 (1998): 523-533. Also arXiv:<a href="https://arxiv.org/abs/alg-geom/9711012">alg-geom/9711012</a>, Nov 1997.
%H Yu-jong Tzeng, <a href="https://www.proquest.com/openview/6b9b7ec298a4bad357d8a051842f69e3">A proof of the Göttsche-Yau-Zaslow formula</a>, Stanford University, 2010.
%Y Cf. A328554.
%K sign
%O 0,2
%A _N. J. A. Sloane_, Oct 29 2019