| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 3 |
| 3 | 4 |
| 4 | 5 |
| 5 | 5 |
| 6 | 7 |
| 7 | 7 |
| 8 | 8 |
| 9 | 9 |
| 10 | 9 |
| 11 | 9 |
| 12 | 12 |
| 13 | 12 |
| 14 | 12 |
| 15 | 12 |
| 16 | 13 |
| 17 | 13 |
| 18 | 16 |
| 19 | 16 |
| 20 | 16 |
| 21 | 16 |
| 22 | 16 |
| 23 | 16 |
| 24 | 20 |
| 25 | 20 |
| 26 | 20 |
| 27 | 21 |
| 28 | 21 |
| 29 | 21 |
| 30 | 21 |
| 31 | 21 |
| 32 | 22 |
| 33 | 22 |
| 34 | 22 |
| 35 | 22 |
| 36 | 28 |
| 37 | 28 |
| 38 | 28 |
| 39 | 28 |
| 40 | 28 |
| 41 | 28 |
| 42 | 28 |
| 43 | 28 |
| 44 | 28 |
| 45 | 28 |
| 46 | 28 |
| 47 | 28 |
| 48 | 33 |
| 49 | 33 |
| 50 | 33 |
| 51 | 33 |
| 52 | 33 |
| 53 | 33 |
| 54 | 37 |
| 55 | 37 |
| 56 | 37 |
| 57 | 37 |
| 58 | 37 |
| 59 | 37 |
| 60 | 37 |
| 61 | 37 |
| 62 | 37 |
| 63 | 37 |
| 64 | 38 |
| 65 | 38 |
| 66 | 38 |
| 67 | 38 |
| 68 | 38 |
| 69 | 38 |
| 70 | 38 |
| 71 | 38 |
| 72 | 48 |
[1,2,3,4,5,5,7,7,8,9,9,9,12,12,12,12,13,13,16,16, 16,16,16,16,20,20,20,21,21,21,21,21,22,22,22,22, 28,28,28,28,28,28,28,28,28,28,28,28,33,33,33,33, 33,33,37,37,37,37,37,37,37,37,37,37,38,38,38,38, 38,38,38,38,48] |