In this problem, the author is imagining again an abstract pyramid made by layers of square matrices of zeros that decrease evenly until the top is reached (the top is made by ones; for instance, a pyramid of base 5(n) would be zeros(5)-> zeros(3) -> ones(1)). We are looking at the pyramid from the top view (that's why is flattened).
The Goldbach Conjecture
Create an n-by-n null matrix and fill with ones certain positions
Given a matrix A (size m x n) create a matrix B (size m+2 x n+2) which consists of matrix A surrounded by zeros. See Example below:
Height of a 3D Pyramid
cross-section of 3D pyramid
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