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A026234 as a simple table

na(n)
12
21
34
43
56
65
78
87
911
1013
119
1217
1310
1419
1523
1629
1712
1831
1914
2037
2141
2243
2315
2447
2553
2659
2761
2867
2916
3071
3118
3273
3379
3483
3589
3697
3720
38101
39103
40107
4121
42109
4322
44113
45127
46131
4724
48137
49139
50149
51151
52157
5325
54163
55167
56173
57179
58181

[2,1,4,3,6,5,8,7,11,13,9,17,10,19,23,29,12,31,14,
 37,41,43,15,47,53,59,61,67,16,71,18,73,79,83,89,
 97,20,101,103,107,21,109,22,113,127,131,24,137,
 139,149,151,157,25,163,167,173,179,181]