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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 4 |
| 6 | 6 |
| 7 | 7 |
| 8 | 8 |
| 9 | 8 |
| 10 | 12 |
| 11 | 13 |
| 12 | 14 |
| 13 | 14 |
| 14 | 15 |
| 15 | 20 |
| 16 | 21 |
| 17 | 22 |
| 18 | 22 |
| 19 | 23 |
| 20 | 23 |
| 21 | 30 |
| 22 | 31 |
| 23 | 32 |
| 24 | 32 |
| 25 | 33 |
| 26 | 33 |
| 27 | 34 |
| 28 | 42 |
| 29 | 43 |
| 30 | 44 |
| 31 | 44 |
| 32 | 45 |
| 33 | 45 |
| 34 | 46 |
| 35 | 46 |
| 36 | 56 |
| 37 | 57 |
| 38 | 58 |
| 39 | 58 |
| 40 | 59 |
| 41 | 59 |
| 42 | 60 |
| 43 | 60 |
| 44 | 60 |
| 45 | 72 |
| 46 | 73 |
| 47 | 74 |
| 48 | 74 |
| 49 | 75 |
| 50 | 75 |
| 51 | 76 |
| 52 | 76 |
| 53 | 76 |
| 54 | 77 |
| 55 | 90 |
| 56 | 91 |
| 57 | 92 |
| 58 | 92 |
| 59 | 93 |
| 60 | 93 |
| 61 | 94 |
| 62 | 94 |
| 63 | 94 |
| 64 | 95 |
| 65 | 95 |
| 66 | 110 |
| 67 | 111 |
[0,1,2,3,4,6,7,8,8,12,13,14,14,15,20,21,22,22,23, 23,30,31,32,32,33,33,34,42,43,44,44,45,45,46,46, 56,57,58,58,59,59,60,60,60,72,73,74,74,75,75,76, 76,76,77,90,91,92,92,93,93,94,94,94,95,95,110,111] |