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A056867 as a simple table

na(n)
11
22
33
44
55
67
78
89
911
1013
1115
1216
1317
1419
1523
1625
1727
1829
1931
2032
2133
2235
2337
2441
2543
2645
2747
2849
2951
3053
3159
3261
3364
3465
3567
3669
3771
3873
3977
4079
4181
4283
4385
4487
4589
4691
4795
4897
4999
50101
51103
52107
53109
54113
55115
56119
57121
58123
59125
60127
61128
62131
63133
64135
65137
66139

[1,2,3,4,5,7,8,9,11,13,15,16,17,19,23,25,27,29,31,
 32,33,35,37,41,43,45,47,49,51,53,59,61,64,65,67,
 69,71,73,77,79,81,83,85,87,89,91,95,97,99,101,103,
 107,109,113,115,119,121,123,125,127,128,131,133,
 135,137,139]