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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 | 10 |
| 11 | 20 |
| 12 | 21 |
| 13 | 31 |
| 14 | 40 |
| 15 | 41 |
| 16 | 43 |
| 17 | 53 |
| 18 | 61 |
| 19 | 62 |
| 20 | 63 |
| 21 | 71 |
| 22 | 73 |
| 23 | 82 |
| 24 | 83 |
| 25 | 86 |
| 26 | 93 |
| 27 | 97 |
| 28 | 421 |
| 29 | 431 |
| 30 | 521 |
| 31 | 541 |
| 32 | 631 |
| 33 | 641 |
| 34 | 643 |
| 35 | 653 |
| 36 | 743 |
| 37 | 751 |
| 38 | 761 |
| 39 | 821 |
| 40 | 842 |
| 41 | 853 |
| 42 | 862 |
| 43 | 863 |
| 44 | 941 |
| 45 | 953 |
| 46 | 961 |
| 47 | 971 |
| 48 | 983 |
| 49 | 5431 |
| 50 | 6421 |
| 51 | 6521 |
| 52 | 7321 |
| 53 | 7541 |
| 54 | 7621 |
| 55 | 7643 |
| 56 | 8431 |
| 57 | 8521 |
[1,2,3,4,5,6,7,8,9,10,20,21,31,40,41,43,53,61,62, 63,71,73,82,83,86,93,97,421,431,521,541,631,641, 643,653,743,751,761,821,842,853,862,863,941,953, 961,971,983,5431,6421,6521,7321,7541,7621,7643, 8431,8521] |