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A027486 as a simple table

n a(n)
1 1
2 3
3 23
4 330
5 7604
6 256620
7 11923260
8 729524880
9 56840099904
10 5493503695680
11 644870893060800
12 90366972897801600
13 14899694352066120960
14 2855250418022402400000
15 629258349435218754451200
16 158034681938560927788288000
17 44866854739192779425625292800

[1,3,23,330,7604,256620,11923260,729524880,
 56840099904,5493503695680,644870893060800,
 90366972897801600,14899694352066120960,
 2855250418022402400000,629258349435218754451200,
 158034681938560927788288000,
 44866854739192779425625292800]

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Last modified May 8 00:02 EDT 2024. Contains 372317 sequences. (Running on oeis4.)