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A106621 as a simple table

na(n)
00
11
21
33
41
51
63
77
82
99
101
1111
123
1313
147
153
164
1717
189
1919
201
2121
2211
2323
246
255
2613
2727
287
2929
303
3131
328
3333
3417
357
369
3737
3819
3939
402
4141
4221
4343
4411
459
4623
4747
4812
4949
505
5151
5213
5353
5427
5511
5614
5757
5829
5959
603
6161
6231
6363
6416
6513
6633
6767
6817
6969
707
7171
7218
7373
7437
7515
7619
7777
7839
7979

[0,1,1,3,1,1,3,7,2,9,1,11,3,13,7,3,4,17,9,19,1,21,
 11,23,6,5,13,27,7,29,3,31,8,33,17,7,9,37,19,39,2,
 41,21,43,11,9,23,47,12,49,5,51,13,53,27,11,14,57,
 29,59,3,61,31,63,16,13,33,67,17,69,7,71,18,73,37,
 15,19,77,39,79]