I was developing a physical RNG and I was trying to test it using The Chi-Squared test and The Kolmogorov-Smirnov Test. The latter gives me some problems. I have an attached photo with a table. In the table, n is the number of generated numbers. The book says that the test should be run for n=1000. I've made a program that calculates the K parameters and I should compare them with values from the table. There is no set of values for n=1000, but there is a formula in the table to continue to calculate values. In the formula, there is a -O(1/n) that troubles me. I reversed the formula to get -O(1/n) from the data in the table, but it makes no sense.