cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A015679 Expansion of e.g.f. theta_3^(25/2).

Original entry on oeis.org

1, 25, 575, 12075, 230025, 3969225, 62850375, 953260875, 14929952625, 254408009625, 4570418955375, 82108573036875, 1505493410045625, 30038848390175625, 641671899357864375, 13683270472813816875
Offset: 0

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References

  • J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 102.

Programs

  • Mathematica
    nmax = 25; CoefficientList[Series[EllipticTheta[3, 0, x]^(25/2), {x, 0, nmax}], x] * Range[0, nmax]! (* Vaclav Kotesovec, Oct 23 2018 *)