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A075502 as a simple table

na(n)
11
27
31
449
521
61
7343
8343
942
101
112401
125145
131225
1470
151
1616807
1774431
1830870
193185
20105
211
22117649
231058841
24722701
25120050
266860
27147
281
29823543
3014941423
3116235562
324084101
33360150
3413034
35196
361

[1,7,1,49,21,1,343,343,42,1,2401,5145,1225,70,1,
 16807,74431,30870,3185,105,1,117649,1058841,
 722701,120050,6860,147,1,823543,14941423,16235562,
 4084101,360150,13034,196,1]