Hi all,(adsbygoogle = window.adsbygoogle || []).push({});

I've been messing around with the product of Poisson distributions and was hoping someone could help me work out a closed form solution for the following convergent infinite series (given x > 0):

[tex]\sum^{\infty}_{i=0}[/tex] [tex]\frac{x^{i}}{i! \times i!}[/tex]

Many thanks in advance,

Jacob.

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# Help with infinite series sum{i=0=>inf} (x^i / (i!)^2)

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