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A278985 as a simple table

na(n)
11
211
312
4111
5112
6121
7122
8123
91111
101112
111121
121122
131123
141211
151212
161213
171221
181222
191223
201231
211232
221233
2311111
2411112
2511121
2611122
2711123
2811211
2911212
3011213
3111221
3211222
3311223
3411231
3511232
3611233
3712111
3812112
3912113
4012121
4112122

[1,11,12,111,112,121,122,123,1111,1112,1121,1122,
 1123,1211,1212,1213,1221,1222,1223,1231,1232,1233,
 11111,11112,11121,11122,11123,11211,11212,11213,
 11221,11222,11223,11231,11232,11233,12111,12112,
 12113,12121,12122]