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A271021 as a simple table

na(n)
121609
286436
3194481
4257049
5345744
6540225
7777924
81028196
91058841
101172889
111382976
121750329
132160900
142313441
152614689
163111696
173651921
184112784
194235364
204691556
214862025
225531904
236245001
246426225
257001316
267800849
278311689
288643600
299253764
309529569

[21609,86436,194481,257049,345744,540225,777924,
 1028196,1058841,1172889,1382976,1750329,2160900,
 2313441,2614689,3111696,3651921,4112784,4235364,
 4691556,4862025,5531904,6245001,6426225,7001316,
 7800849,8311689,8643600,9253764,9529569]