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A352491 as a simple table

na(n)
10
20
3-1
41
5-3
60
7-9
83
90
10-2
11-21
122
13-51
14-10
15-3
169
17-111
183
19-237
200
21-15
22-26
23-489
2410
25-2
26-70
272
28-12
29-995
300
31-2017
3221
33-39
34-158
35-19
3615
37-4059
38-346
39-105
4012
41-8151
42-18
43-16341
44-36
45-5
46-722
47-32721
4826
49-32
505
51-237
52-108
53-65483
5419
55-53

[0,0,-1,1,-3,0,-9,3,0,-2,-21,2,-51,-10,-3,9,-111,
 3,-237,0,-15,-26,-489,10,-2,-70,2,-12,-995,0,
 -2017,21,-39,-158,-19,15,-4059,-346,-105,12,-8151,
 -18,-16341,-36,-5,-722,-32721,26,-32,5,-237,-108,
 -65483,19,-53]