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A009025 as a simple table

na(n)
01
10
20
33
4-11
570
6-354
72415
8-15763
9125172
10-1002604
119222455
12-86960631
13905535618
14-9647654054
15109599211995
16-1245410413895
1714255558592040
18-147402624694104
191100681059753035
207361694753788285
21-667740119513804610

[1,0,0,3,-11,70,-354,2415,-15763,125172,-1002604,
 9222455,-86960631,905535618,-9647654054,
 109599211995,-1245410413895,14255558592040,
 -147402624694104,1100681059753035,
 7361694753788285,-667740119513804610]