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A352412 as a simple table

na(n)
01
11
2-4
320
4-224
53392
6-67232
71629728
8-46799104
91552143104
10-58386807296
112455954797056
12-114222622662656
135819845970653184
14-322384671892123648
1519290013218140254208
16-1239886482366130946048
1785200320552417960394752

[1,1,-4,20,-224,3392,-67232,1629728,-46799104,
 1552143104,-58386807296,2455954797056,
 -114222622662656,5819845970653184,
 -322384671892123648,19290013218140254208,
 -1239886482366130946048,85200320552417960394752]