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%I #15 Feb 12 2021 13:47:04
%S 1,1,3,1,20,24,63,288,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
%T 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
%U 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1
%N Unreduced numerator of volume of best symplectic packing of n balls in 4-dimensional ball.
%C These fractions are not reduced. For the reduced fractions see A125846/A125847. - _N. J. A. Sloane_, Feb 12 2021
%D P. Biran, Symplectic packing in dimension 4, Geom. Funct. Anal. 7(1997), 420-437, MR1466333.
%D Dusa McDuff and Leonid Polterovich, Symplectic packings and algebraic geometry, Invent. Math. 115 (1994), 405-434.
%D Schlenk, Felix. "Dusa McDuff and symplectic geometry." arXiv preprint arXiv:2011.03317 (2020).
%Y Cf. A030043, A125846/A125847.
%K nonn,frac
%O 1,3
%A _N. J. A. Sloane_.