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A013214 as a simple table

na(n)
01
10
20
30
4-3
530
6-180
71113
8-8379
969804
10-628614
116216155
12-67322211
13789438078
14-9958088140
15134602170675
16-1941190097399
1729743794572824
18-482464755060922
198257903545778011
20-148698758217737671

[1,0,0,0,-3,30,-180,1113,-8379,69804,-628614,
 6216155,-67322211,789438078,-9958088140,
 134602170675,-1941190097399,29743794572824,
 -482464755060922,8257903545778011,
 -148698758217737671]