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A273060 as a simple table

n a(n)
1 1
2 1
3 1
4 4
5 8
6 96
7 192
8 2304
9 13824
10 207360
11 829440
12 24883200
13 99532800
14 2786918400
15 31352832000
16 501645312000
17 4013162496000
18 192631799808000
19 1155790798848000
20 52010585948160000
21 728148203274240000
22 19223112566439936000
23 192231125664399360000

[1,1,1,4,8,96,192,2304,13824,207360,829440,
 24883200,99532800,2786918400,31352832000,
 501645312000,4013162496000,192631799808000,
 1155790798848000,52010585948160000,
 728148203274240000,19223112566439936000,
 192231125664399360000]

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Last modified June 18 20:04 EDT 2021. Contains 345121 sequences. (Running on oeis4.)