XTA Clans: Difference between revisions
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<math>\sum_{m=1}^\infty\sum_{n=1}^\infty\frac{m^2\,n} | |||
{3^m\left(m\,3^n+n\,3^m\right)}</math> | |||
Revision as of 19:51, 28 May 2007
<math>\sum_{m=1}^\infty\sum_{n=1}^\infty\frac{m^2\,n}
{3^m\left(m\,3^n+n\,3^m\right)}</math>