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A176599 as a simple table

na(n)
01
1-1
2-1
3-5
4-7
5-1631
6-96547
7-40291823
8-16870575007
9-7075000252463
10-2969301738826267
11-13713149169712887583
12-10557203537780702505907

[1,-1,-1,-5,-7,-1631,-96547,-40291823,
 -16870575007,-7075000252463,-2969301738826267,
 -13713149169712887583,-10557203537780702505907]