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A264604 as a simple table

na(n)
116
225
336
449
5529
664
7729
881
9961
10100
111156
12121
131369
14144
151521
16169
171764
181849
19196
202025
212116
22225
2323104
2424336
25256
2626244
2727225
28289
292916
303025
313136
32324
333364
343481
3535344
36361
373721
383844
393969
40400
4141209
424225
434356
44441
4545369
464624
474761
48484
4949284
505041
515184
52529
535329
545476

[16,25,36,49,529,64,729,81,961,100,1156,121,1369,
 144,1521,169,1764,1849,196,2025,2116,225,23104,
 24336,256,26244,27225,289,2916,3025,3136,324,3364,
 3481,35344,361,3721,3844,3969,400,41209,4225,4356,
 441,45369,4624,4761,484,49284,5041,5184,529,5329,
 5476]