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A075730 as a simple table

na(n)
181
2225
3441
4625
51089
61225
71521
82401
92601
103025
113249
124225
134761
145929
157225
167569
178281
188649
199025
2012321
2113225
2214161
2314641
2415129
2516641
2617689
2719881
2820449
2921025
3024025
3125281
3225921
3328561
3431329
3533489
3634225
3734969
3840401

[81,225,441,625,1089,1225,1521,2401,2601,3025,
 3249,4225,4761,5929,7225,7569,8281,8649,9025,
 12321,13225,14161,14641,15129,16641,17689,19881,
 20449,21025,24025,25281,25921,28561,31329,33489,
 34225,34969,40401]