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A202870 as a simple table

na(n)
11
2-1
31
4-11
51
61
7-46
837
9-1
101
11-162
12299
13-99
141
151
16-567
171675
18-1324
19225
20-1
211
22-1872
238316
24-11315
255292
26-432
271
281
29-5881
3040254
31-79457
3260782
33-16458
34760
35-1
361
37-17990
38182413
39-490520
40543130
41-260498
4245424
43-1232

[1,-1,1,-11,1,1,-46,37,-1,1,-162,299,-99,1,1,-567,
 1675,-1324,225,-1,1,-1872,8316,-11315,5292,-432,1,
 1,-5881,40254,-79457,60782,-16458,760,-1,1,-17990,
 182413,-490520,543130,-260498,45424,-1232]