Just to check and note some python coding practices - alispa/python-speedtest ...

You can simply run this Python script to calculate the Odd ball numbers and find that the vales are correct. About Python Int multiplied by float calculation ...

For example, 2 is interpreted by Python as an int, by S(2) is a SymPy Integer. print (type (2)) print (type (S (2))) ... There is also a Float function in Sympy, which creates a sympy.Float object, ...