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A185399 as a simple table

n a(n)
1 1
2 2
3 12
4 20
5 2520
6 27720
7 720720
8 4084080
9 5173168
10 80313433200
11 2329089562800
12 13127595717600
13 485721041551200
14 2844937529085600
15 1345655451257488800
16 3099044504245996706400
17 54749786241679275146400
18 3230237388259077233637600

[1,2,12,20,2520,27720,720720,4084080,5173168,
 80313433200,2329089562800,13127595717600,
 485721041551200,2844937529085600,
 1345655451257488800,3099044504245996706400,
 54749786241679275146400,3230237388259077233637600]

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Last modified April 25 05:49 EDT 2024. Contains 371964 sequences. (Running on oeis4.)