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