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A222321 as a simple table

n a(n)
1 1
2 0
3 4
4 52
5 674
6 38238
7 2284728
8 620488671
9 174162198742
10 206752746752932

[1,0,4,52,674,38238,2284728,620488671,
 174162198742,206752746752932]

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Last modified May 25 22:51 EDT 2022. Contains 354073 sequences. (Running on oeis4.)