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A306328 as a simple table

na(n)
10
22
33
44
55
65
77
88
99
107
1111
1225
1313
149
158
1616
1717
1825
1919
2049
2110
2213
2323
24125
2525
2615
2727
2881
2929
3010
3131
3232
3314
3419
3512
36625
3737
3821
3916
40343
4141
4212
4343
44169
4564
4625
4747
48625
4949
5049
5120
52225
5353
54125
5516
56729
5722
5831
5959
60100
6161
6233
63100
6464
6518
6616
6767
68361
6926
7014
7171
7215625
7373
7439
7564

[0,2,3,4,5,5,7,8,9,7,11,25,13,9,8,16,17,25,19,49,
 10,13,23,125,25,15,27,81,29,10,31,32,14,19,12,625,
 37,21,16,343,41,12,43,169,64,25,47,625,49,49,20,
 225,53,125,16,729,22,31,59,100,61,33,100,64,18,16,
 67,361,26,14,71,15625,73,39,64]