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A015026 as a simple table

na(n)
11
2-10
3-1110
41354200
518174718200
6-2683133647866000
7-4357223907912681246000
877834136400782124140797040000
915294068523753116384387488625702640000
10-33057395763506647102922925284376653918412000000

[1,-10,-1110,1354200,18174718200,
 -2683133647866000,-4357223907912681246000,
 77834136400782124140797040000,
 15294068523753116384387488625702640000,
 -33057395763506647102922925284376653918412000000]