array([[1, 1, 1, 1], [2, 1, 1, 1], [1, 3, 1, 1], [2, 3, 1, 1], [1, 1, 5, 1],
    [2, 1, 5, 1], [1, 3, 5, 1], [2, 3, 5, 1], [1, 1, 1, 7], [2, 1, 1, 7], [
    1, 3, 1, 7], [2, 3, 1, 7], [1, 1, 5, 7], [2, 1, 5, 7], [1, 3, 5, 7], [2,
    3, 5, 7]])
Compute all products for all numbers in a python list