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A159755 as a simple table

na(n)
00
1-1
21
3-2
4-1
54
6-3
7-3
80
912
10-4
11-5
12-4
134
1432
15-5
16-7
17-8
18-4
1916
2080
21-6
22-9
23-12
24-12
250
2648
27192
28-7
29-11
30-16
31-20
32-16
3316
34128
35448
36-8
37-13
38-20
39-28
40-32
41-16
4264
43320
441024
45-9
46-15
47-24
48-36
49-48
50-48
510
52192
53768
542304

[0,-1,1,-2,-1,4,-3,-3,0,12,-4,-5,-4,4,32,-5,-7,-8,
 -4,16,80,-6,-9,-12,-12,0,48,192,-7,-11,-16,-20,
 -16,16,128,448,-8,-13,-20,-28,-32,-16,64,320,1024,
 -9,-15,-24,-36,-48,-48,0,192,768,2304]