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A002015 as a simple table

na(n)
00
11
24
39
416
525
636
749
864
981
100
1121
1244
1369
1496
1525
1656
1789
1824
1961
200
2141
2284
2329
2476
2525
2676
2729
2884
2941
300
3161
3224
3389
3456
3525
3696
3769
3844
3921
400
4181
4264
4349
4436
4525
4616
479
484
491
500
511
524
539
5416
5525
5636
5749
5864
5981

[0,1,4,9,16,25,36,49,64,81,0,21,44,69,96,25,56,89,
 24,61,0,41,84,29,76,25,76,29,84,41,0,61,24,89,56,
 25,96,69,44,21,0,81,64,49,36,25,16,9,4,1,0,1,4,9,
 16,25,36,49,64,81]