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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 5 |
| 6 | 6 |
| 7 | 7 |
| 8 | 8 |
| 9 | 9 |
| 10 | 11 |
| 11 | 21 |
| 12 | 22 |
| 13 | 31 |
| 14 | 33 |
| 15 | 41 |
| 16 | 42 |
| 17 | 44 |
| 18 | 51 |
| 19 | 55 |
| 20 | 61 |
| 21 | 62 |
| 22 | 63 |
| 23 | 66 |
| 24 | 71 |
| 25 | 77 |
| 26 | 81 |
| 27 | 82 |
| 28 | 84 |
| 29 | 88 |
| 30 | 91 |
| 31 | 93 |
| 32 | 99 |
| 33 | 111 |
| 34 | 211 |
| 35 | 212 |
| 36 | 221 |
| 37 | 311 |
| 38 | 313 |
| 39 | 331 |
| 40 | 411 |
| 41 | 412 |
| 42 | 414 |
| 43 | 421 |
| 44 | 422 |
| 45 | 441 |
| 46 | 511 |
| 47 | 515 |
| 48 | 551 |
| 49 | 611 |
| 50 | 612 |
| 51 | 613 |
| 52 | 616 |
| 53 | 621 |
| 54 | 623 |
| 55 | 631 |
| 56 | 632 |
| 57 | 661 |
| 58 | 711 |
| 59 | 717 |
| 60 | 771 |
[1,2,3,4,5,6,7,8,9,11,21,22,31,33,41,42,44,51,55, 61,62,63,66,71,77,81,82,84,88,91,93,99,111,211, 212,221,311,313,331,411,412,414,421,422,441,511, 515,551,611,612,613,616,621,623,631,632,661,711, 717,771] |