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A137437
as a simple table
n
a(n)
1
1
2
0
3
0
4
0
5
-2
6
0
7
6
8
0
9
-24
10
0
11
120
12
40
13
0
14
-720
15
-420
16
0
17
5040
18
3948
19
0
20
-40320
21
-38304
22
-2240
23
0
24
362880
25
396576
26
50400
[1,0,0,0,-2,0,6,0,-24,0,120,40,0,-720,-420,0,5040, 3948,0,-40320,-38304,-2240,0,362880,396576,50400]
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Last modified September 2 05:36 EDT 2024. Contains 375604 sequences. (Running on oeis4.)