How to create this matrix without using loop?

2018 10 12
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更新时间：2018 10 13
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Hi,
I was wondering how to create this gradient matrix without using a loop ?
1 1 1 1 1
1 4 4 4 4
1 4 9 9 9
1 4 9 16 16
1 4 9 16 25
I already have the main diagonal completed using the following
x = 1 + cumsum(3:2:9)
I don't know how to do the rest, any help would be great.
Andy

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R2018b

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Andy Lau
Andy Lau
2018-10-12

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Image Analyst
Image Analyst
2018-10-13

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