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A364813 as a simple table

na(n)
11
22
33
416
55
636
77
8256
981
10100
1111
123456
1313
14196
15225
1632768
1717
1817496
1919
2016000
21441
22484
2323
241327104
25625
26676
276561
2843904
2929
30810000
3131
322097152
331089
341156
351225
36362797056
3737
381444
391521
4010240000
4141
423111696
4343
44170368
45273375
462116
4747
488153726976
492401
50625000

[1,2,3,16,5,36,7,256,81,100,11,3456,13,196,225,
 32768,17,17496,19,16000,441,484,23,1327104,625,
 676,6561,43904,29,810000,31,2097152,1089,1156,
 1225,362797056,37,1444,1521,10240000,41,3111696,
 43,170368,273375,2116,47,8153726976,2401,625000]