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A226353 as a simple table

na(n)
21
349
4169
536
61
71
82601
91089
101
118836
1233489
1344100
141
15149769
16128164
1796721
181
19156816
201225
2140804
2212321
23831744
24839056
251149184
261737124
273655744
28407044
291890625
302208196
311089
321
331466521
346125625
352235025
362832489
371
383759721
396885376
408844676

[1,49,169,36,1,1,2601,1089,1,8836,33489,44100,1,
 149769,128164,96721,1,156816,1225,40804,12321,
 831744,839056,1149184,1737124,3655744,407044,
 1890625,2208196,1089,1,1466521,6125625,2235025,
 2832489,1,3759721,6885376,8844676]