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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 9 |
| 4 | 11 |
| 5 | 12 |
| 6 | 21 |
| 7 | 22 |
| 8 | 29 |
| 9 | 91 |
| 10 | 122 |
| 11 | 141 |
| 12 | 212 |
| 13 | 221 |
| 14 | 222 |
| 15 | 288 |
| 16 | 441 |
| 17 | 911 |
| 18 | 921 |
| 19 | 1118 |
| 20 | 1191 |
| 21 | 1488 |
| 22 | 2212 |
| 23 | 2988 |
| 24 | 11141 |
| 25 | 11882 |
| 26 | 14829 |
| 27 | 21212 |
| 28 | 22229 |
| 29 | 42921 |
| 30 | 49441 |
| 31 | 49829 |
| 32 | 49891 |
| 33 | 122182 |
| 34 | 141118 |
| 35 | 141421 |
| 36 | 221911 |
| 37 | 491141 |
| 38 | 491212 |
| 39 | 498891 |
| 40 | 498928 |
| 41 | 498941 |
| 42 | 921911 |
| 43 | 992421 |
| 44 | 1114891 |
| 45 | 1411428 |
| 46 | 2211882 |
| 47 | 2212288 |
| 48 | 2981428 |
| 49 | 2988118 |
| 50 | 4911122 |
| 51 | 4911428 |
| 52 | 4921882 |
[1,2,9,11,12,21,22,29,91,122,141,212,221,222,288, 441,911,921,1118,1191,1488,2212,2988,11141,11882, 14829,21212,22229,42921,49441,49829,49891,122182, 141118,141421,221911,491141,491212,498891,498928, 498941,921911,992421,1114891,1411428,2211882, 2212288,2981428,2988118,4911122,4911428,4921882] |