Hydrogenic radial function

• ns type Hydrogen radial wave functions

$n$	$R(r)$
$1$	$2\alpha^{3/2}\exp(-\alpha r)$
$2$	$\frac{1}{2\sqrt 2}\alpha^{3/2}(2-\alpha r)\exp(-\alpha r /2)$
$3$	${\sqrt \frac{4}{27}}\alpha^{3/2}(1-2\alpha r/3+2\alpha^2 r^2/27)\exp(-\alpha r /3)$