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A273977 as a simple table

na(n)
111
2111
3112
4121
5122
61111
71112
81121
91122
101123
111211
121212
131213
141221
151222
161223
171231
181232
191233
2011111
2111112
2211121
2311122
2411123
2511211
2611212
2711213
2811221
2911222
3011223
3111231
3211232
3311233
3411234
3512111
3612112
3712113
3812121
3912122
4012123
4112131
4212132
4312133
4412134
4512211
4612212

[11,111,112,121,122,1111,1112,1121,1122,1123,1211,
 1212,1213,1221,1222,1223,1231,1232,1233,11111,
 11112,11121,11122,11123,11211,11212,11213,11221,
 11222,11223,11231,11232,11233,11234,12111,12112,
 12113,12121,12122,12123,12131,12132,12133,12134,
 12211,12212]