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A038072 as a simple table

na(n)
1-1
2-1
3-1
40
51
62
70
8-3
9-5
10-1
1111
1219
134
14-42
15-78
16-18
17172
18333
1988
20-747
21-1483
22-436
233355
246834
252193
26-15417
27-32248
28-11206
2972264
30154900
3157929
32-344282
33-755103
34-302126
351661464
363726663
371586904
38-8103245
39-18581402
40-8384292
4139876825

[-1,-1,-1,0,1,2,0,-3,-5,-1,11,19,4,-42,-78,-18,
 172,333,88,-747,-1483,-436,3355,6834,2193,-15417,
 -32248,-11206,72264,154900,57929,-344282,-755103,
 -302126,1661464,3726663,1586904,-8103245,
 -18581402,-8384292,39876825]