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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 10 |
| 4 | 11 |
| 5 | 12 |
| 6 | 21 |
| 7 | 110 |
| 8 | 111 |
| 9 | 112 |
| 10 | 113 |
| 11 | 114 |
| 12 | 115 |
| 13 | 116 |
| 14 | 117 |
| 15 | 118 |
| 16 | 119 |
| 17 | 120 |
| 18 | 121 |
| 19 | 122 |
| 20 | 123 |
| 21 | 124 |
| 22 | 125 |
| 23 | 126 |
| 24 | 127 |
| 25 | 128 |
| 26 | 129 |
| 27 | 130 |
| 28 | 131 |
| 29 | 132 |
| 30 | 133 |
| 31 | 134 |
| 32 | 135 |
| 33 | 136 |
| 34 | 137 |
| 35 | 138 |
| 36 | 139 |
| 37 | 140 |
| 38 | 141 |
| 39 | 142 |
| 40 | 1111 |
| 41 | 11111 |
| 42 | 111111 |
| 43 | 1111111 |
| 44 | 11111111 |
| 45 | 11111112 |
| 46 | 11111113 |
[1,3,10,11,12,21,110,111,112,113,114,115,116,117, 118,119,120,121,122,123,124,125,126,127,128,129, 130,131,132,133,134,135,136,137,138,139,140,141, 142,1111,11111,111111,1111111,11111111,11111112, 11111113] |