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A039757 as a simple table

na(n)
01
1-1
21
33
4-4
51
6-15
723
8-9
91
10105
11-176
1286
13-16
141
15-945
161689
17-950
18230
19-25
201
2110395
22-19524
2312139
24-3480
25505
26-36
271
28-135135
29264207
30-177331
3157379
32-10045
33973
34-49
351
362027025
37-4098240
382924172
39-1038016
40208054
41-24640
421708
43-64
441
45-34459425
4671697105
47-53809164
4820570444
49-4574934
50626934
51-53676
522796
53-81
541

[1,-1,1,3,-4,1,-15,23,-9,1,105,-176,86,-16,1,-945,
 1689,-950,230,-25,1,10395,-19524,12139,-3480,505,
 -36,1,-135135,264207,-177331,57379,-10045,973,-49,
 1,2027025,-4098240,2924172,-1038016,208054,-24640,
 1708,-64,1,-34459425,71697105,-53809164,20570444,
 -4574934,626934,-53676,2796,-81,1]