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A053057 as a simple table

na(n)
10
21
34
49
536
681
7100
8121
9144
10169
11196
12225
13324
14400
15441
16484
17529
18900
19961
201521
211681
222025
232304
242601
253364
263481
273600
284489
294624
305776
315929
327225
337396
348100
358836
369025
3710000
3810201
3910404
4010609
4110816
4211025
4312100
4412321
4512544
4612769

[0,1,4,9,36,81,100,121,144,169,196,225,324,400,
 441,484,529,900,961,1521,1681,2025,2304,2601,3364,
 3481,3600,4489,4624,5776,5929,7225,7396,8100,8836,
 9025,10000,10201,10404,10609,10816,11025,12100,
 12321,12544,12769]