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A191871 as a simple table

na(n)
00
11
21
39
41
525
69
749
81
981
1025
11121
129
13169
1449
15225
161
17289
1881
19361
2025
21441
22121
23529
249
25625
26169
27729
2849
29841
30225
31961
321
331089
34289
351225
3681
371369
38361
391521
4025
411681
42441
431849
44121
452025
46529
472209
489
492401
50625
512601
52169
532809
54729
553025

[0,1,1,9,1,25,9,49,1,81,25,121,9,169,49,225,1,289,
 81,361,25,441,121,529,9,625,169,729,49,841,225,
 961,1,1089,289,1225,81,1369,361,1521,25,1681,441,
 1849,121,2025,529,2209,9,2401,625,2601,169,2809,
 729,3025]