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A361817 as a simple table

na(n)
01
12
2-2
3-16
4-10
5118
6304
7-500
8-3754
9-2488
1030866
1183716
12-135568
13-1080972
14-792876
159090484
1625788118
17-39325156
18-335074520
19-271779024
202820643842
218348113120
22-11788972644
23-107836934448
24-96107852032
25900943403012
262778574561276
27-3596374190416

[1,2,-2,-16,-10,118,304,-500,-3754,-2488,30866,
 83716,-135568,-1080972,-792876,9090484,25788118,
 -39325156,-335074520,-271779024,2820643842,
 8348113120,-11788972644,-107836934448,
 -96107852032,900943403012,2778574561276,
 -3596374190416]