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A067252 as a simple table

na(n)
14
28
39
416
525
632
736
850
981
10121
11128
12225
13256
14324
15529
16576
17625
18729
19841
201058
211089
221296
231681
241682
252025
262312
272401
282809
292916
303362
313872
324096
334232
344761
356050
366728
376889
387569
397921
408100
419216
4210082
4312769
4417161
4519881
4620000

[4,8,9,16,25,32,36,50,81,121,128,225,256,324,529,
 576,625,729,841,1058,1089,1296,1681,1682,2025,
 2312,2401,2809,2916,3362,3872,4096,4232,4761,6050,
 6728,6889,7569,7921,8100,9216,10082,12769,17161,
 19881,20000]