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A080956 as a simple table

na(n)
01
11
20
3-2
4-5
5-9
6-14
7-20
8-27
9-35
10-44
11-54
12-65
13-77
14-90
15-104
16-119
17-135
18-152
19-170
20-189
21-209
22-230
23-252
24-275
25-299
26-324
27-350
28-377
29-405
30-434
31-464
32-495
33-527
34-560
35-594
36-629
37-665
38-702
39-740
40-779
41-819
42-860
43-902
44-945
45-989
46-1034
47-1080
48-1127
49-1175
50-1224
51-1274
52-1325
53-1377

[1,1,0,-2,-5,-9,-14,-20,-27,-35,-44,-54,-65,-77,
 -90,-104,-119,-135,-152,-170,-189,-209,-230,-252,
 -275,-299,-324,-350,-377,-405,-434,-464,-495,-527,
 -560,-594,-629,-665,-702,-740,-779,-819,-860,-902,
 -945,-989,-1034,-1080,-1127,-1175,-1224,-1274,
 -1325,-1377]