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A207815 as a simple table

na(n)
01
1-3
21
38
4-6
51
6-21
725
8-9
91
1055
11-90
1251
13-12
141
15-144
16300
17-234
1886
19-15
201
21377
22-954
23951
24-480
25130
26-18
271
28-987
292939
30-3573
312305
32-855
33183
34-21
351
362584
37-8850
3812707
39-10008
404740
41-1386
42245
43-24
441
45-6765
4626195
47-43398
4840426
49-23373
508715

[1,-3,1,8,-6,1,-21,25,-9,1,55,-90,51,-12,1,-144,
 300,-234,86,-15,1,377,-954,951,-480,130,-18,1,
 -987,2939,-3573,2305,-855,183,-21,1,2584,-8850,
 12707,-10008,4740,-1386,245,-24,1,-6765,26195,
 -43398,40426,-23373,8715]