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A072489 as a simple table

n a(n)
1 1
2 2
3 6
4 12
5 60
6 180
7 1260
8 5040
9 15120
10 75600
11 831600
12 3326400
13 43243200
14 302702400
15 1513512000
16 6054048000
17 102918816000
18 617512896000
19 11732745024000
20 58663725120000

[1,2,6,12,60,180,1260,5040,15120,75600,831600,
 3326400,43243200,302702400,1513512000,6054048000,
 102918816000,617512896000,11732745024000,
 58663725120000]

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Last modified April 16 10:45 EDT 2024. Contains 371709 sequences. (Running on oeis4.)