'Negative exponent in division in Sympy

I make a division

fn=n/3**(n+1)

But the view has

fn=3**(-n-1)*n

Please tell me how to force as fn=n/3**(n+1)

sympy division exponent

Solution 1:^[1]

Other than modifying the printer, I can only think of symbol-trickery: make the denominator a Symbol: n/Symbol('3^{n+1}').

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Solution	Source
Solution 1	smichr