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A106225 as a simple table

na(n)
01
11
2-2
37
4-27
5114
6-506
72322
8-10919
952316
10-254369
111251563
12-6218656
1331153743
14-157167147
15797682007
16-4069817562
1720860266354
18-107358128720
19554533772363
20-2873667741743
2114935575580894
22-77833224795929
23406595414780038
24-2128748177726089
2511167899337858904

[1,1,-2,7,-27,114,-506,2322,-10919,52316,-254369,
 1251563,-6218656,31153743,-157167147,797682007,
 -4069817562,20860266354,-107358128720,
 554533772363,-2873667741743,14935575580894,
 -77833224795929,406595414780038,-2128748177726089,
 11167899337858904]