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A115139 as a simple table

na(n)
11
21
31
4-1
51
6-2
71
8-3
91
101
11-4
123
131
14-5
156
16-1
171
18-6
1910
20-4
211
22-7
2315
24-10
251
261
27-8
2821
29-20
305
311
32-9
3328
34-35
3515
36-1
371
38-10
3936
40-56
4135
42-6
431
44-11
4545
46-84
4770
48-21
491
501
51-12
5255
53-120
54126
55-56
567
571
58-13
5966
60-165
61210
62-126
6328
64-1
651
66-14
6778
68-220
69330
70-252
7184
72-8
731
74-15
7591
76-286
77495
78-462
79210
80-36
811

[1,1,1,-1,1,-2,1,-3,1,1,-4,3,1,-5,6,-1,1,-6,10,-4,
 1,-7,15,-10,1,1,-8,21,-20,5,1,-9,28,-35,15,-1,1,
 -10,36,-56,35,-6,1,-11,45,-84,70,-21,1,1,-12,55,
 -120,126,-56,7,1,-13,66,-165,210,-126,28,-1,1,-14,
 78,-220,330,-252,84,-8,1,-15,91,-286,495,-462,210,
 -36,1]