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A137825 as a simple table

n a(n)
1 2
2 6
3 30
4 60
5 420
6 4620
7 13860
8 180180
9 360360
10 6126120
11 116396280
12 2677114440
13 77636318760
14 155272637520
15 776363187600
16 24067258815600
17 890488576177200
18 2671465728531600
19 109530094869795600
20 4709794079401210800
21 221360321731856907600
22 11732097051788416102800

[2,6,30,60,420,4620,13860,180180,360360,6126120,
 116396280,2677114440,77636318760,155272637520,
 776363187600,24067258815600,890488576177200,
 2671465728531600,109530094869795600,
 4709794079401210800,221360321731856907600,
 11732097051788416102800]

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Last modified June 12 10:58 EDT 2021. Contains 344947 sequences. (Running on oeis4.)