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A132967 as a simple table

na(n)
11
20
31
4-1
51
6-2
72
8-2
93
10-4
114
12-5
136
14-6
159
16-11
1710
18-14
1916
20-17
2122
22-24
2326
24-32
2537
26-40
2747
28-54
2958
30-70
3180
32-84
33100
34-112
35122
36-143
37158
38-172
39198
40-222
41242
42-274
43306
44-332
45379
46-422
47454
48-515
49569
50-620
51698
52-766
53834
54-932
551028
56-1118

[1,0,1,-1,1,-2,2,-2,3,-4,4,-5,6,-6,9,-11,10,-14,
 16,-17,22,-24,26,-32,37,-40,47,-54,58,-70,80,-84,
 100,-112,122,-143,158,-172,198,-222,242,-274,306,
 -332,379,-422,454,-515,569,-620,698,-766,834,-932,
 1028,-1118]