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A196740 as a simple table

n a(n)
1 1
2 1
3 20
4 401
5 35202
6 7942712
7 5423213789
8 10714890351493
9 61977591097741664
10 1045534716234234877628
11 51543884247862488090471612 

[1,1,20,401,35202,7942712,5423213789,
 10714890351493,61977591097741664,
 1045534716234234877628,51543884247862488090471612]

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Last modified April 25 10:01 EDT 2024. Contains 371967 sequences. (Running on oeis4.)