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A083392 as a simple table

na(n)
00
1-1
22
3-4
46
5-9
612
7-16
820
9-25
1030
11-36
1242
13-49
1456
15-64
1672
17-81
1890
19-100
20110
21-121
22132
23-144
24156
25-169
26182
27-196
28210
29-225
30240
31-256
32272
33-289
34306
35-324
36342
37-361
38380
39-400
40420
41-441
42462
43-484
44506
45-529
46552
47-576
48600
49-625
50650
51-676
52702

[0,-1,2,-4,6,-9,12,-16,20,-25,30,-36,42,-49,56,
 -64,72,-81,90,-100,110,-121,132,-144,156,-169,182,
 -196,210,-225,240,-256,272,-289,306,-324,342,-361,
 380,-400,420,-441,462,-484,506,-529,552,-576,600,
 -625,650,-676,702]