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A115006 as a simple table

na(n)
00
13
28
316
426
539
654
772
892
9115
10140
11168
12198
13231
14266
15304
16344
17387
18432
19480
20530
21583
22638
23696
24756
25819
26884
27952
281022
291095
301170
311248
321328
331411
341496
351584
361674
371767
381862
391960
402060
412163
422268
432376
442486
452599
462714
472832
482952
493075
503200

[0,3,8,16,26,39,54,72,92,115,140,168,198,231,266,
 304,344,387,432,480,530,583,638,696,756,819,884,
 952,1022,1095,1170,1248,1328,1411,1496,1584,1674,
 1767,1862,1960,2060,2163,2268,2376,2486,2599,2714,
 2832,2952,3075,3200]