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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 3 |
| 3 | 5 |
| 4 | 6 |
| 5 | 6 |
| 6 | 8 |
| 7 | 8 |
| 8 | 9 |
| 9 | 10 |
| 10 | 10 |
| 11 | 11 |
| 12 | 11 |
| 13 | 11 |
| 14 | 11 |
| 15 | 13 |
| 16 | 14 |
| 17 | 16 |
| 18 | 17 |
| 19 | 17 |
| 20 | 17 |
| 21 | 18 |
| 22 | 19 |
| 23 | 21 |
| 24 | 22 |
| 25 | 22 |
| 26 | 23 |
| 27 | 24 |
| 28 | 26 |
| 29 | 26 |
| 30 | 26 |
| 31 | 27 |
| 32 | 28 |
| 33 | 29 |
| 34 | 29 |
| 35 | 29 |
| 36 | 29 |
| 37 | 29 |
| 38 | 29 |
| 39 | 31 |
| 40 | 33 |
| 41 | 34 |
| 42 | 35 |
| 43 | 36 |
| 44 | 37 |
| 45 | 38 |
| 46 | 38 |
| 47 | 38 |
| 48 | 39 |
| 49 | 39 |
| 50 | 41 |
| 51 | 41 |
| 52 | 42 |
| 53 | 42 |
| 54 | 43 |
| 55 | 43 |
| 56 | 45 |
| 57 | 45 |
| 58 | 46 |
| 59 | 46 |
| 60 | 48 |
| 61 | 50 |
| 62 | 50 |
| 63 | 52 |
| 64 | 52 |
| 65 | 52 |
| 66 | 52 |
| 67 | 53 |
| 68 | 55 |
[0,3,5,6,6,8,8,9,10,10,11,11,11,11,13,14,16,17,17, 17,18,19,21,22,22,23,24,26,26,26,27,28,29,29,29, 29,29,29,31,33,34,35,36,37,38,38,38,39,39,41,41, 42,42,43,43,45,45,46,46,48,50,50,52,52,52,52,53, 55] |