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A164790 as a simple table

na(n)
18
20
31
43
53
612
713
817
921
1023
1123
1273
13101
14103
15103
16112
17113
18117
19121
20123
21123
22173
23323
24373
251103
261103
271112
281113
291117
301121
311123
321123
331173
341323
351373
363323
373373
3811373
3913323
4013373
4117373
4223323
4323373
4473373
45101373
46103323
47103373
48111373

[8,0,1,3,3,12,13,17,21,23,23,73,101,103,103,112,
 113,117,121,123,123,173,323,373,1103,1103,1112,
 1113,1117,1121,1123,1123,1173,1323,1373,3323,3373,
 11373,13323,13373,17373,23323,23373,73373,101373,
 103323,103373,111373]