semantic error log function

[mcgrim]

Thank you buran, this is actually running.
However, I need to ask you a question for my understanding.
I used a double loop because as you can see from the recursive formula posted above,
there are two iterands (i,k)

So now I am not really understanding how does your code work, even though you only
used 'i' ?

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for emphasis I will write the recursive formula again in python format

a0=cc
cc[k][i]=((cc[k-1][i] - 4 ** (-k) * cc[k-1][i-1])/(1 - 4 ** (-k)))