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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 3 |
| 3 | 10 |
| 4 | 11 |
| 5 | 23 |
| 6 | 30 |
| 7 | 31 |
| 8 | 33 |
| 9 | 100 |
| 10 | 101 |
| 11 | 103 |
| 12 | 110 |
| 13 | 111 |
| 14 | 223 |
| 15 | 230 |
| 16 | 231 |
| 17 | 233 |
| 18 | 300 |
| 19 | 301 |
| 20 | 303 |
| 21 | 310 |
| 22 | 311 |
| 23 | 323 |
| 24 | 330 |
| 25 | 331 |
| 26 | 333 |
| 27 | 1000 |
| 28 | 1001 |
| 29 | 1003 |
| 30 | 1010 |
| 31 | 1011 |
| 32 | 1023 |
| 33 | 1030 |
| 34 | 1031 |
| 35 | 1033 |
| 36 | 1100 |
| 37 | 1101 |
| 38 | 1103 |
| 39 | 1110 |
| 40 | 1111 |
| 41 | 2223 |
| 42 | 2230 |
| 43 | 2231 |
| 44 | 2233 |
| 45 | 2300 |
| 46 | 2301 |
| 47 | 2303 |
| 48 | 2310 |
| 49 | 2311 |
[0,1,3,10,11,23,30,31,33,100,101,103,110,111,223, 230,231,233,300,301,303,310,311,323,330,331,333, 1000,1001,1003,1010,1011,1023,1030,1031,1033,1100, 1101,1103,1110,1111,2223,2230,2231,2233,2300,2301, 2303,2310,2311] |