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A327989 as a simple table

na(n)
19
225
381
4121
5289
6625
7729
8841
91681
103249
113481
125041
137225
148281
158649
169025
1710201
1811449
1913689
2015129
2118769
2219881
2322201
2425281
2527225
2628561
2729241
2831329
2932041
3033489
3134225
3236481
3338025
3438809
3542849
3646225
3748841
3851529
3953361
4055225
4156169
4257121

[9,25,81,121,289,625,729,841,1681,3249,3481,5041,
 7225,8281,8649,9025,10201,11449,13689,15129,18769,
 19881,22201,25281,27225,28561,29241,31329,32041,
 33489,34225,36481,38025,38809,42849,46225,48841,
 51529,53361,55225,56169,57121]