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A212747 as a simple table

na(n)
01
14
213
332
463
5108
6171
7256
8365
9500
10665
11864
121099
131372
141687
152048
162457
172916
183429
194000
204631
215324
226083
236912
247813
258788
269841
2710976
2812195
2913500
3014895
3116384
3217969
3319652
3421437
3523328
3625327
3727436
3829659
3932000

[1,4,13,32,63,108,171,256,365,500,665,864,1099,
 1372,1687,2048,2457,2916,3429,4000,4631,5324,6083,
 6912,7813,8788,9841,10976,12195,13500,14895,16384,
 17969,19652,21437,23328,25327,27436,29659,32000]