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A102412 as a simple table

n a(n)
1 0
2 1
3 -4
4 4
5 0
6 96
7 -396
8 108
9 0
10 1012320
11 -192900
12 -64890
13 11460
14 90
15 -2038014720
16 1977810240
17 -304486560
18 -12131280
19 2792160
20 21840
21 -33190735737600
22 4445760574080
23 2334485260800
24 -394554283200
25 2330344800
26 1198048320
27 8215200

[0,1,-4,4,0,96,-396,108,0,1012320,-192900,-64890,
 11460,90,-2038014720,1977810240,-304486560,
 -12131280,2792160,21840,-33190735737600,
 4445760574080,2334485260800,-394554283200,
 2330344800,1198048320,8215200]

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Last modified April 13 19:03 EDT 2021. Contains 342939 sequences. (Running on oeis4.)