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A069992 as a simple table

n a(n)
1 3
2 57
3 2123
4 138609
5 13883283
6 1974243241
7 378027128283
8 93761532169953
9 29240923237509923
10 11199084302796542745
11 5167442341466021937003
12 2827285169201754895553617
13 1809878752362221218378054323

[3,57,2123,138609,13883283,1974243241,
 378027128283,93761532169953,29240923237509923,
 11199084302796542745,5167442341466021937003,
 2827285169201754895553617,
 1809878752362221218378054323]

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Last modified February 3 08:31 EST 2023. Contains 360034 sequences. (Running on oeis4.)