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A028245 as a simple table

n a(n)
1 0
2 0
3 0
4 0
5 24
6 360
7 3360
8 25200
9 166824
10 1020600
11 5921520
12 33105600
13 180204024
14 961800840
15 5058406080
16 26308573200
17 135666039624
18 694994293080
19 3542142833040
20 17980946172000
21 90990301641624

[0,0,0,0,24,360,3360,25200,166824,1020600,5921520,
 33105600,180204024,961800840,5058406080,
 26308573200,135666039624,694994293080,
 3542142833040,17980946172000,90990301641624]

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)