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A012400 as a simple table

n a(n)
0 1
1 0
2 0
3 0
4 -12
5 60
6 -90
7 420
8 -11648
9 88704
10 -118440
11 1491600
12 -85167192
13 865152288
14 317981664
15 19296033120
16 -2535023513088
17 30778504850304
18 126137259616320
19 388230513819264
20 -214673614448387712

[1,0,0,0,-12,60,-90,420,-11648,88704,-118440,
 1491600,-85167192,865152288,317981664,19296033120,
 -2535023513088,30778504850304,126137259616320,
 388230513819264,-214673614448387712]

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Last modified April 25 07:07 EDT 2024. Contains 371964 sequences. (Running on oeis4.)