To test these values I have run a simulation on ADS for N=3, Return Loss 10dB, BW=20MHz, Zo=50R.You can see the results are in good agreement. Both the ripple and return loss (S11) agree.
You can see the downside of these filters that the frequency response repeats and the out of band attenuation is not a good we would like and not as good as expected from the ideal chebychev response.