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A223459 as a simple table

n a(n)
1 21
2 400
3 47100
4 31075684
5 116111266332
6 2412122721426324
7 280173531066504459408
8 180359138791051357960964956
9 646396187061902362932292802186560 

[21,400,47100,31075684,116111266332,
 2412122721426324,280173531066504459408,
 180359138791051357960964956,
 646396187061902362932292802186560]

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Last modified April 24 04:14 EDT 2024. Contains 371918 sequences. (Running on oeis4.)