Hi,
Sorry if this is a repost. I searched but found no results.
I am wondering if it is an easy way to construct the following matrix:

r      1     0     0    0
r^2   r     1     0    0
r^3   r^2  r     1    0
r^4   r^3  r^2  r    1

where r could be any number. Thanks.
Wen
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