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A280387 as a simple table

na(n)
14
28
39
416
521
625
727
832
936
1045
1149
1264
1381
1487
1591
1699
17121
18125
19128
20144
21169
22196
23217
24243
25256
26289
27325
28343
29361
30400
31417
32481
33512
34529
35559
36625
37685
38697
39703
40721
41729
42745
43749
44775
45801
46841
47925
48931
49961
501024
511156
521157
531261
541331

[4,8,9,16,21,25,27,32,36,45,49,64,81,87,91,99,121,
 125,128,144,169,196,217,243,256,289,325,343,361,
 400,417,481,512,529,559,625,685,697,703,721,729,
 745,749,775,801,841,925,931,961,1024,1156,1157,
 1261,1331]