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A099997 as a simple table

na(n)
11
28
316
427
536
664
7100
8125
9144
10196
11225
12256
13324
14361
15441
16512
17576
18676
19784
20900
211000
221089
231225
241331
251444
261600
271728
281849
292025
302116
312197
322304
332500
342704
352809
363025
373136
383364
393481
403721
413969
424225
434489
444761
454913
465184
475476

[1,8,16,27,36,64,100,125,144,196,225,256,324,361,
 441,512,576,676,784,900,1000,1089,1225,1331,1444,
 1600,1728,1849,2025,2116,2197,2304,2500,2704,2809,
 3025,3136,3364,3481,3721,3969,4225,4489,4761,4913,
 5184,5476]