| n | a(n) |
|---|---|
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 5 |
| 6 | 7 |
| 7 | 8 |
| 8 | 9 |
| 9 | 23 |
| 10 | 24 |
| 11 | 37 |
| 12 | 38 |
| 13 | 39 |
| 14 | 41 |
| 15 | 51 |
| 16 | 52 |
| 17 | 53 |
| 18 | 54 |
| 19 | 71 |
| 20 | 72 |
| 21 | 73 |
| 22 | 74 |
| 23 | 75 |
| 24 | 78 |
| 25 | 91 |
| 26 | 93 |
| 27 | 97 |
| 28 | 98 |
| 29 | 111 |
| 30 | 131 |
| 31 | 132 |
| 32 | 139 |
| 33 | 149 |
| 34 | 151 |
| 35 | 154 |
| 36 | 173 |
| 37 | 174 |
| 38 | 175 |
| 39 | 178 |
| 40 | 191 |
| 41 | 193 |
| 42 | 211 |
| 43 | 213 |
| 44 | 215 |
| 45 | 217 |
| 46 | 231 |
| 47 | 232 |
| 48 | 311 |
| 49 | 312 |
| 50 | 323 |
[2,3,4,5,7,8,9,23,24,37,38,39,41,51,52,53,54,71, 72,73,74,75,78,91,93,97,98,111,131,132,139,149, 151,154,173,174,175,178,191,193,211,213,215,217, 231,232,311,312,323] |