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A073751 as a simple table

na(n)
12
23
32
45
52
63
77
82
911
1013
112
123
135
1417
1519
1623
172
1829
1931
207
213
2237
2341
2443
252
2647
2753
2859
295
3061
3167
3271
3373
3411
3579
362
3783
383
3989
4097
4113
42101
43103
44107
45109
46113
47127
48131
49137
50139
512
52149
53151
547
55157
56163
57167
5817
59173
60179
61181
62191
63193
64197
65199
6619
67211
683

[2,3,2,5,2,3,7,2,11,13,2,3,5,17,19,23,2,29,31,7,3,
 37,41,43,2,47,53,59,5,61,67,71,73,11,79,2,83,3,89,
 97,13,101,103,107,109,113,127,131,137,139,2,149,
 151,7,157,163,167,17,173,179,181,191,193,197,199,
 19,211,3]