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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 9 |
| 6 | 10 |
| 7 | 11 |
| 8 | 12 |
| 9 | 25 |
| 10 | 26 |
| 11 | 27 |
| 12 | 28 |
| 13 | 29 |
| 14 | 30 |
| 15 | 31 |
| 16 | 63 |
| 17 | 64 |
| 18 | 65 |
| 19 | 66 |
| 20 | 67 |
| 21 | 135 |
| 22 | 136 |
| 23 | 137 |
| 24 | 275 |
| 25 | 276 |
| 26 | 277 |
| 27 | 278 |
| 28 | 279 |
| 29 | 280 |
| 30 | 281 |
| 31 | 282 |
| 32 | 283 |
| 33 | 567 |
| 34 | 568 |
| 35 | 569 |
| 36 | 570 |
| 37 | 571 |
| 38 | 1143 |
| 39 | 1144 |
| 40 | 1145 |
| 41 | 1146 |
| 42 | 1147 |
| 43 | 2295 |
| 44 | 2296 |
| 45 | 2297 |
| 46 | 2298 |
| 47 | 2299 |
| 48 | 4599 |
| 49 | 4600 |
| 50 | 4601 |
| 51 | 4602 |
| 52 | 4603 |
| 53 | 9207 |
| 54 | 9208 |
[1,2,3,4,9,10,11,12,25,26,27,28,29,30,31,63,64,65, 66,67,135,136,137,275,276,277,278,279,280,281,282, 283,567,568,569,570,571,1143,1144,1145,1146,1147, 2295,2296,2297,2298,2299,4599,4600,4601,4602,4603, 9207,9208] |