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A020487 as a simple table

na(n)
11
24
39
416
520
625
736
849
950
1064
1181
12100
13117
14121
15144
16169
17180
18196
19200
20225
21242
22256
23289
24324
25325
26361
27400
28441
29450
30468
31484
32500
33529
34576
35578
36605
37625
38650
39676
40729
41784
42800
43841
44900
45961
46968
47980
481024
491025
501058
511089
521156
531225
541280
551296

[1,4,9,16,20,25,36,49,50,64,81,100,117,121,144,
 169,180,196,200,225,242,256,289,324,325,361,400,
 441,450,468,484,500,529,576,578,605,625,650,676,
 729,784,800,841,900,961,968,980,1024,1025,1058,
 1089,1156,1225,1280,1296]