| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 2 |
| 5 | 2 |
| 6 | 3 |
| 7 | 3 |
| 8 | 3 |
| 9 | 4 |
| 10 | 4 |
| 11 | 6 |
| 12 | 6 |
| 13 | 6 |
| 14 | 7 |
| 15 | 9 |
| 16 | 10 |
| 17 | 10 |
| 18 | 11 |
| 19 | 12 |
| 20 | 15 |
| 21 | 16 |
| 22 | 17 |
| 23 | 19 |
| 24 | 21 |
| 25 | 23 |
| 26 | 25 |
| 27 | 29 |
| 28 | 30 |
| 29 | 33 |
| 30 | 37 |
| 31 | 40 |
| 32 | 43 |
| 33 | 47 |
| 34 | 51 |
| 35 | 55 |
| 36 | 61 |
| 37 | 65 |
| 38 | 71 |
| 39 | 77 |
| 40 | 83 |
| 41 | 89 |
| 42 | 97 |
| 43 | 103 |
| 44 | 112 |
| 45 | 122 |
| 46 | 131 |
| 47 | 141 |
| 48 | 151 |
| 49 | 161 |
| 50 | 173 |
| 51 | 188 |
| 52 | 199 |
| 53 | 214 |
| 54 | 230 |
| 55 | 247 |
| 56 | 264 |
| 57 | 282 |
| 58 | 300 |
| 59 | 320 |
| 60 | 344 |
| 61 | 366 |
| 62 | 391 |
| 63 | 417 |
| 64 | 445 |
| 65 | 474 |
| 66 | 505 |
[1,1,2,2,2,3,3,3,4,4,6,6,6,7,9,10,10,11,12,15,16, 17,19,21,23,25,29,30,33,37,40,43,47,51,55,61,65, 71,77,83,89,97,103,112,122,131,141,151,161,173, 188,199,214,230,247,264,282,300,320,344,366,391, 417,445,474,505] |