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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 6 |
| 5 | 11 |
| 6 | 22 |
| 7 | 44 |
| 8 | 66 |
| 9 | 111 |
| 10 | 121 |
| 11 | 141 |
| 12 | 161 |
| 13 | 212 |
| 14 | 232 |
| 15 | 242 |
| 16 | 272 |
| 17 | 292 |
| 18 | 323 |
| 19 | 343 |
| 20 | 383 |
| 21 | 414 |
| 22 | 464 |
| 23 | 474 |
| 24 | 545 |
| 25 | 565 |
| 26 | 616 |
| 27 | 626 |
| 28 | 636 |
| 29 | 656 |
| 30 | 747 |
| 31 | 838 |
| 32 | 848 |
| 33 | 878 |
| 34 | 898 |
| 35 | 929 |
| 36 | 969 |
| 37 | 1111 |
| 38 | 1221 |
| 39 | 1441 |
| 40 | 1661 |
| 41 | 2112 |
| 42 | 2222 |
| 43 | 2332 |
| 44 | 2552 |
| 45 | 2772 |
| 46 | 2882 |
| 47 | 3223 |
| 48 | 3883 |
| 49 | 4114 |
| 50 | 4444 |
| 51 | 4554 |
[1,2,4,6,11,22,44,66,111,121,141,161,212,232,242, 272,292,323,343,383,414,464,474,545,565,616,626, 636,656,747,838,848,878,898,929,969,1111,1221, 1441,1661,2112,2222,2332,2552,2772,2882,3223,3883, 4114,4444,4554] |