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A118188 as a simple table

na(n)
01
1-1
23
3-33
41407
5-237057
6158992383
7-425715556353
84556004503093247
9-194971932801554579457
1033370662957719457037287423
11-22845215336421444625717664940033
1262557106610069521429900219032249827327
13-685195337175488637158242110253091749621661697

[1,-1,3,-33,1407,-237057,158992383,-425715556353,
 4556004503093247,-194971932801554579457,
 33370662957719457037287423,
 -22845215336421444625717664940033,
 62557106610069521429900219032249827327,
 -685195337175488637158242110253091749621661697]