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A157542 as a simple table

n a(n)
2 1
3 3
4 42
5 930
6 17685
7 265041
8 3668483
9 44840097
10 529728300
11 5955342987
12 65311345275
13 699155920398
14 7170690213960
15 69964606094670
16 652763403442422
17 5868431782886486
18 51137730082075059
19 433379839761592641

[1,3,42,930,17685,265041,3668483,44840097,
 529728300,5955342987,65311345275,699155920398,
 7170690213960,69964606094670,652763403442422,
 5868431782886486,51137730082075059,
 433379839761592641]

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Last modified June 28 12:00 EDT 2022. Contains 354907 sequences. (Running on oeis4.)