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A231874 as a simple table

na(n)
11
211
312
413
5111
6112
7113
8121
9122
10123
11131
12132
13133
141111
151112
161113
171121
181122
191123
201131
211132
221133
231211
241212
251213
261221
271222
281223
291231
301232
311233
321311
331312
341313
351321
361322
371323
381331
391332
401333

[1,11,12,13,111,112,113,121,122,123,131,132,133,
 1111,1112,1113,1121,1122,1123,1131,1132,1133,1211,
 1212,1213,1221,1222,1223,1231,1232,1233,1311,1312,
 1313,1321,1322,1323,1331,1332,1333]