Question: How do I generate a numeric Vector from a function with multiple arguments?

My goal is to generate incremental values of a function to plot using dataplot. Why does the first example generate numeric values in the Vector and the second example does not?

fenq := f -> 2.1^(f+1):
pf := Vector(5, fenq)
                             [  4.41   ]
                              [  9.261  ]
                         pf := [ 19.4481 ]
                              [40.84101 ]
fseqn := (Se, f) -> Se^(f+1):
psf := Vector(5, fsenq(2.1, j))

I can plot the first data set using dataplot(pf). I cannot plot the second data set.

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