but the question says Given the triangle of consecutive odd numbers: and don't suggest on bulding one.
would have been better if the format of the question is reformated or give clean picture on how to access the triangle
of numbers

sorry

And why are you posting this without marking it as a spoiler?

Description shows you exactly how the pyramid is constructed. And as it states, N is the row of pyramid that you have to return (as sum of its elements). You can either create the pyramid yourself, or look for some pattern that would help you calculate the sum in more mathematical way. Or simply, skip it for now :P

To give you a start, try to find a formula on how to calculate the sum of every number 0 to n. So for n = 10 it would be (1+2+3+4+5+6+7+8+9+10) = 55. You could calculat this with a for loop or you could come up with a formula.

I solved it by looking at the amount of white cells in each row.

Did you do this: return print(...)? print returns None, return the number instead (removing print).

How does None (which is returned by your function) match expected value of 9414?

Please read this paragraph, it contains answer to your problem: https://docs.codewars.com/training/troubleshooting#expected-the-same

Read this: https://docs.codewars.com/training/troubleshooting/#expected-the-same

or says Hello, World! if name is not given (or passed as an empty String).

Your code should handle that last case that raises an error.

Yes.