| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 3 |
| 3 | 3 |
| 4 | 5 |
| 5 | 6 |
| 6 | 8 |
| 7 | 8 |
| 8 | 10 |
| 9 | 11 |
| 10 | 13 |
| 11 | 13 |
| 12 | 15 |
| 13 | 16 |
| 14 | 18 |
| 15 | 18 |
| 16 | 20 |
| 17 | 21 |
| 18 | 23 |
| 19 | 23 |
| 20 | 25 |
| 21 | 26 |
| 22 | 28 |
| 23 | 28 |
| 24 | 30 |
| 25 | 31 |
| 26 | 33 |
| 27 | 33 |
| 28 | 35 |
| 29 | 36 |
| 30 | 38 |
| 31 | 38 |
| 32 | 40 |
| 33 | 41 |
| 34 | 43 |
| 35 | 43 |
| 36 | 45 |
| 37 | 46 |
| 38 | 48 |
| 39 | 48 |
| 40 | 50 |
| 41 | 51 |
| 42 | 53 |
| 43 | 53 |
| 44 | 55 |
| 45 | 56 |
| 46 | 58 |
| 47 | 58 |
| 48 | 60 |
| 49 | 61 |
| 50 | 63 |
| 51 | 63 |
| 52 | 65 |
| 53 | 66 |
| 54 | 68 |
| 55 | 68 |
| 56 | 70 |
| 57 | 71 |
| 58 | 73 |
| 59 | 73 |
| 60 | 75 |
| 61 | 76 |
| 62 | 78 |
| 63 | 78 |
| 64 | 80 |
| 65 | 81 |
| 66 | 83 |
[0,1,3,3,5,6,8,8,10,11,13,13,15,16,18,18,20,21,23, 23,25,26,28,28,30,31,33,33,35,36,38,38,40,41,43, 43,45,46,48,48,50,51,53,53,55,56,58,58,60,61,63, 63,65,66,68,68,70,71,73,73,75,76,78,78,80,81,83] |