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A266086 as a simple table

na(n)
00
1-1
28
3-16
430
5-45
666
7-88
8116
9-145
10180
11-216
12258
13-301
14350
15-400
16456
17-513
18576
19-640
20710
21-781
22858
23-936
241020
25-1105
261196
27-1288
281386
29-1485
301590
31-1696
321808
33-1921
342040
35-2160
362286
37-2413
382546
39-2680
402820
41-2961
423108
43-3256
443410

[0,-1,8,-16,30,-45,66,-88,116,-145,180,-216,258,
 -301,350,-400,456,-513,576,-640,710,-781,858,-936,
 1020,-1105,1196,-1288,1386,-1485,1590,-1696,1808,
 -1921,2040,-2160,2286,-2413,2546,-2680,2820,-2961,
 3108,-3256,3410]