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A030074 as a simple table

na(n)
10
21
34
49
5225
6576
7900
82209
927225
1038809
1144521
1250625
1357121
14155236
15166464
16178084
174796100
185978025
197535025
208732025
2110017225
2230140100
2332490000
2473359225
251475865889
261490963769
271506138481
281521390025

[0,1,4,9,225,576,900,2209,27225,38809,44521,50625,
 57121,155236,166464,178084,4796100,5978025,
 7535025,8732025,10017225,30140100,32490000,
 73359225,1475865889,1490963769,1506138481,
 1521390025]