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A156356 as a simple table

na(n)
01
1-3
2-40
3747
48360
5-131043
6-4302520
7378065739
84126545320
9-116565742413
10-6359542622200
11439133717768817
1214374338172267880
13-586516393899525183
14-44796731270702196280
1516872389712291089019483
16184096079483869385248040
17-9822962739350459098477353

[1,-3,-40,747,8360,-131043,-4302520,378065739,
 4126545320,-116565742413,-6359542622200,
 439133717768817,14374338172267880,
 -586516393899525183,-44796731270702196280,
 16872389712291089019483,184096079483869385248040,
 -9822962739350459098477353]