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A038471 as a simple table

na(n)
121
269
381
484
5261
6273
7276
8321
9324
10336
111029
121041
131044
141089
151092
161104
171281
181284
191296
201344
214101
224113
234116
244161
254164
264176
274353
284356
294368
304416
315121
325124
335136
345184
355376
3616389
3716401
3816404
3916449
4016452
4116464
4216641
4316644
4416656
4516704

[21,69,81,84,261,273,276,321,324,336,1029,1041,
 1044,1089,1092,1104,1281,1284,1296,1344,4101,4113,
 4116,4161,4164,4176,4353,4356,4368,4416,5121,5124,
 5136,5184,5376,16389,16401,16404,16449,16452,
 16464,16641,16644,16656,16704]