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A289327 as a simple table

na(n)
01
1-168
2-33768
3-9806496
4-3482370024
5-1364023149552
6-567278132268960
7-245678241438057792
8-109559333350138970088
9-49951945835561166375048
10-23173552482577051154061168
11-10901813191731667585777068000

[1,-168,-33768,-9806496,-3482370024,
 -1364023149552,-567278132268960,
 -245678241438057792,-109559333350138970088,
 -49951945835561166375048,
 -23173552482577051154061168,
 -10901813191731667585777068000]