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A274220 as a simple table

na(n)
03
1-4
210
3-25
466
5-179
6493
7-1369
83818
9-10672
1029865
11-83626
12234237
13-656205
141838483
15-5151080
1614432666
17-40438941
18113306686
19-317477255
20889550021
21-2492461633
226983719214
23-19567941936
2454828148469
25-153625048854
26430447808073
27-1206087937261
283379383275971
29-9468821484028

[3,-4,10,-25,66,-179,493,-1369,3818,-10672,29865,
 -83626,234237,-656205,1838483,-5151080,14432666,
 -40438941,113306686,-317477255,889550021,
 -2492461633,6983719214,-19567941936,54828148469,
 -153625048854,430447808073,-1206087937261,
 3379383275971,-9468821484028]