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A025527 as a simple table

n a(n)
1 1
2 1
3 1
4 2
5 2
6 12
7 12
8 48
9 144
10 1440
11 1440
12 17280
13 17280
14 241920
15 3628800
16 29030400
17 29030400
18 522547200
19 522547200
20 10450944000
21 219469824000
22 4828336128000
23 4828336128000
24 115880067072000
25 579400335360000
26 15064408719360000

[1,1,1,2,2,12,12,48,144,1440,1440,17280,17280,
 241920,3628800,29030400,29030400,522547200,
 522547200,10450944000,219469824000,4828336128000,
 4828336128000,115880067072000,579400335360000,
 15064408719360000]

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Last modified March 29 00:26 EDT 2024. Contains 371264 sequences. (Running on oeis4.)