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A063505 as a simple table

n a(n)
2 2
3 8
4 32
5 320
6 2592
7 57472
8 946176
9 44302336
10 1482686464
11 143210315776
12 9732400087040
13 1915349322694656
14 263918421714927616
15 105091512697853313024
16 29316605112733216538624
17 23522116026027393322844160
18 13266245323073952003913678848
19 21392237922664971275489914126336
20 24362629720999005014327927695736832 

[2,8,32,320,2592,57472,946176,44302336,1482686464,
 143210315776,9732400087040,1915349322694656,
 263918421714927616,105091512697853313024,
 29316605112733216538624,
 23522116026027393322844160,
 13266245323073952003913678848,
 21392237922664971275489914126336,
 24362629720999005014327927695736832]

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Last modified April 23 05:20 EDT 2024. Contains 371906 sequences. (Running on oeis4.)