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A212968 as a simple table

na(n)
01
15
217
338
475
5127
6203
7300
8429
9585
10781
111010
121287
131603
141975
152392
162873
173405
184009
194670
205411
216215
227107
238068
249125
2510257
2611493
2712810
2814239
2915755
3017391
3119120
3220977
3322933
3425025
3527222
3629563
3732015
3834619
3937340

[1,5,17,38,75,127,203,300,429,585,781,1010,1287,
 1603,1975,2392,2873,3405,4009,4670,5411,6215,7107,
 8068,9125,10257,11493,12810,14239,15755,17391,
 19120,20977,22933,25025,27222,29563,32015,34619,
 37340]