Can someone tell the me the data bank which has all the STO-3G basis sets for many electron atoms?

I am trying to express the slater orbitals of Helium atom in terms of 3 gaussian functions (STO-3G basis set). Is there any data bank or reference table in which I can find the exponents and coefficients in it ? Also in primitive cartesian gaussian , it seems like both $$2s$$ and $$2p$$ has the same functional form. For $$2p$$ it is $$x\exp(-\alpha x^{2})$$ , $$y\exp(-\alpha y^{2})$$ and $$z\exp(-\alpha z^{2})$$. What is for $$2s$$ orbital in primitive gaussian function ?

The functional form of a primitive cartesian gaussian with $$l=0$$ is $$\exp(-\alpha r^2)$$, independent of the $$n$$ quantum number.