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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 8 |
| 5 | 11 |
| 6 | 16 |
| 7 | 21 |
| 8 | 22 |
| 9 | 31 |
| 10 | 32 |
| 11 | 41 |
| 12 | 42 |
| 13 | 44 |
| 14 | 51 |
| 15 | 61 |
| 16 | 62 |
| 17 | 64 |
| 18 | 71 |
| 19 | 81 |
| 20 | 82 |
| 21 | 84 |
| 22 | 88 |
| 23 | 91 |
| 24 | 101 |
| 25 | 102 |
| 26 | 111 |
| 27 | 121 |
| 28 | 122 |
| 29 | 124 |
| 30 | 128 |
| 31 | 131 |
| 32 | 141 |
| 33 | 142 |
| 34 | 151 |
| 35 | 161 |
| 36 | 162 |
| 37 | 164 |
| 38 | 168 |
| 39 | 171 |
| 40 | 176 |
| 41 | 181 |
| 42 | 182 |
| 43 | 191 |
| 44 | 201 |
| 45 | 202 |
| 46 | 204 |
| 47 | 211 |
| 48 | 221 |
| 49 | 222 |
| 50 | 231 |
| 51 | 241 |
| 52 | 242 |
| 53 | 244 |
| 54 | 248 |
| 55 | 251 |
| 56 | 256 |
| 57 | 261 |
[1,2,4,8,11,16,21,22,31,32,41,42,44,51,61,62,64, 71,81,82,84,88,91,101,102,111,121,122,124,128,131, 141,142,151,161,162,164,168,171,176,181,182,191, 201,202,204,211,221,222,231,241,242,244,248,251, 256,261] |