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A038071 as a simple table

na(n)
11
21
30
4-1
5-1
60
71
80
9-1
100
112
121
13-3
14-3
154
167
17-4
18-14
193
2028
214
22-53
23-30
2491
2595
26-142
27-240
28191
29556
30-165
31-1192
32-140
332358
341215
35-4322
36-4194
377211
3811492
39-10300
40-27839
4110194
4261770
433506
44-127099
45-58080
46242071
47218346
48-419278

[1,1,0,-1,-1,0,1,0,-1,0,2,1,-3,-3,4,7,-4,-14,3,28,
 4,-53,-30,91,95,-142,-240,191,556,-165,-1192,-140,
 2358,1215,-4322,-4194,7211,11492,-10300,-27839,
 10194,61770,3506,-127099,-58080,242071,218346,
 -419278]