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A157554 as a simple table

n a(n)
2 1
3 3
4 66
5 3990
6 178335
7 6510483
8 190667659
9 5047394427
10 131071431060
11 3262733109790
12 78872812374741
13 1857536871457917
14 41896936373100900
15 899337065318075790
16 18460566561637223550
17 365127965985604164628

[1,3,66,3990,178335,6510483,190667659,5047394427,
 131071431060,3262733109790,78872812374741,
 1857536871457917,41896936373100900,
 899337065318075790,18460566561637223550,
 365127965985604164628]

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Last modified June 19 23:45 EDT 2024. Contains 373510 sequences. (Running on oeis4.)