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A221435 as a simple table

na(n)
1120
25280
366240
4161280
5161280
6812851200
720449013760000
8921456860096102400
968695056598964266598400

[120,5280,66240,161280,161280,812851200,
 20449013760000,921456860096102400,
 68695056598964266598400]