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A207638 as a simple table

na(n)
149
281
3121
4169
5196
6289
7324
8484
9676
10784
111156
121296
131936
142704
153136
164624
175184
187744
1910816
2012544
2118496
2220736
2330976
2443264
2550176
2673984
2782944
28123904

[49,81,121,169,196,289,324,484,676,784,1156,1296,
 1936,2704,3136,4624,5184,7744,10816,12544,18496,
 20736,30976,43264,50176,73984,82944,123904]