I read this function in an exercise. It looks quit familiar to me, however I do not know its name.

Whats the name of the $\rho_n$ function and who brought it up first?
I read this function in an exercise. It looks quit familiar to me, however I do not know its name.

Whats the name of the $\rho_n$ function and who brought it up first?
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Here $\rho_{n}=B\left(\frac{1}{2},\frac{1}{2}n-1\right)^{-1}$. I do not know a special name for it.