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A254521 as a simple table

na(n)
11
28
327
464
5125
6216
7343
8504
9729
101000
111331
121728
132197
142744
153375
164032
174913
185832
196859
208000
219261
2210648
2312167
2413608
2515625
2617576
2719656
2821952
2924389
3027000
3129791
3232256
3335937
3439304
3542875
3646656
3750653
3854872
3959319

[1,8,27,64,125,216,343,504,729,1000,1331,1728,
 2197,2744,3375,4032,4913,5832,6859,8000,9261,
 10648,12167,13608,15625,17576,19656,21952,24389,
 27000,29791,32256,35937,39304,42875,46656,50653,
 54872,59319]