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A184881 as a simple table

na(n)
01
1-3
22
3-3
46
5-14
636
7-99
8286
9-858
102652
11-8398
1227132
13-89148
14297160
15-1002915
163421710
17-11785890
1840940460
19-143291610
20504932340
21-1790214660
226382504440
23-22870640910
2482334307276
25-297670187844
261080432533656
27-3935861372604
2814386251913656

[1,-3,2,-3,6,-14,36,-99,286,-858,2652,-8398,27132,
 -89148,297160,-1002915,3421710,-11785890,40940460,
 -143291610,504932340,-1790214660,6382504440,
 -22870640910,82334307276,-297670187844,
 1080432533656,-3935861372604,14386251913656]