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A089428
as a simple table
n
a(n)
0
1
1
1
2
1
3
3
4
12
5
180
6
1492920
7
8893324440
8
284424639188409720
[1,1,1,3,12,180,1492920,8893324440, 284424639188409720]
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Last modified April 18 20:26 EDT 2024. Contains 371781 sequences. (Running on oeis4.)
