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A293141 as a simple table

n a(n)
0 1
1 -1
2 -1
3 0
4 0
5 0
6 180
7 0
8 10080
9 90720
10 0
11 0
12 179625600
13 -1556755200
14 -10897286400
15 326918592000
16 -2615348736000
17 -88921857024000
18 800296713216000
19 -30411275102208000
20 152056375511040000
21 0
22 -351250227430502400000
23 -3231502092360622080000

[1,-1,-1,0,0,0,180,0,10080,90720,0,0,179625600,
 -1556755200,-10897286400,326918592000,
 -2615348736000,-88921857024000,800296713216000,
 -30411275102208000,152056375511040000,0,
 -351250227430502400000,-3231502092360622080000]

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Last modified October 1 08:23 EDT 2022. Contains 357135 sequences. (Running on oeis4.)