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A225268 as a simple table

na(n)
13
28
316
425
540
659
779
8104
9133
10166
11205
12244
13290
14339
15392
16448
17516
18584
19659
20736
21820
22904
23998
241087
251187
261294
271400
281514
291635
301766
311896
322025
332168
342306
352457
362616
372769
382929
393098
403262
413445
423628
433816
443999
454200
464407
474604
484823
495034

[3,8,16,25,40,59,79,104,133,166,205,244,290,339,
 392,448,516,584,659,736,820,904,998,1087,1187,
 1294,1400,1514,1635,1766,1896,2025,2168,2306,2457,
 2616,2769,2929,3098,3262,3445,3628,3816,3999,4200,
 4407,4604,4823,5034]