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A031309 as a simple table

na(n)
11
22
33
44
55
66
77
88
99
1029
1111
121
1315
1417
1519
1621
1723
1825
1927
2049
2114
2233
232
2437
2539
2641
2743
2845
2947
3069
3116
3236
3355
343
3559
3661
3763
3865
3967
4089
4118
4238
4358
4477
454
4681
4783
4885
4987
50109
5120
5240
5360
5480
5599
565
57103
58105
59107
60129
6122
6242
6362
6482

[1,2,3,4,5,6,7,8,9,29,11,1,15,17,19,21,23,25,27,
 49,14,33,2,37,39,41,43,45,47,69,16,36,55,3,59,61,
 63,65,67,89,18,38,58,77,4,81,83,85,87,109,20,40,
 60,80,99,5,103,105,107,129,22,42,62,82]