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A212190 as a simple table

na(n)
125
249
381
4100
5196
6289
7324
8400
9529
10784
111089
121156
131296
141600
152116
163136
174225
184356
194624
205184
216400
228464
2312544
2416641
2516900
2617424
2718496
2820736
2925600
3033856
3150176
3266049
3366564
3467600
3569696
3673984
3782944
38102400
39135424
40200704
41263169

[25,49,81,100,196,289,324,400,529,784,1089,1156,
 1296,1600,2116,3136,4225,4356,4624,5184,6400,8464,
 12544,16641,16900,17424,18496,20736,25600,33856,
 50176,66049,66564,67600,69696,73984,82944,102400,
 135424,200704,263169]