| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 2 |
| 4 | 4 |
| 5 | 4 |
| 6 | 6 |
| 7 | 6 |
| 8 | 9 |
| 9 | 9 |
| 10 | 13 |
| 11 | 13 |
| 12 | 18 |
| 13 | 18 |
| 14 | 24 |
| 15 | 24 |
| 16 | 31 |
| 17 | 31 |
| 18 | 39 |
| 19 | 39 |
| 20 | 50 |
| 21 | 50 |
| 22 | 62 |
| 23 | 62 |
| 24 | 77 |
| 25 | 77 |
| 26 | 93 |
| 27 | 93 |
| 28 | 112 |
| 29 | 112 |
| 30 | 134 |
| 31 | 134 |
| 32 | 159 |
| 33 | 159 |
| 34 | 187 |
| 35 | 187 |
| 36 | 218 |
| 37 | 218 |
| 38 | 252 |
| 39 | 252 |
| 40 | 293 |
| 41 | 293 |
| 42 | 337 |
| 43 | 337 |
| 44 | 388 |
| 45 | 388 |
| 46 | 442 |
| 47 | 442 |
| 48 | 503 |
| 49 | 503 |
| 50 | 571 |
| 51 | 571 |
| 52 | 646 |
| 53 | 646 |
| 54 | 728 |
| 55 | 728 |
| 56 | 817 |
| 57 | 817 |
| 58 | 913 |
[1,1,2,2,4,4,6,6,9,9,13,13,18,18,24,24,31,31,39, 39,50,50,62,62,77,77,93,93,112,112,134,134,159, 159,187,187,218,218,252,252,293,293,337,337,388, 388,442,442,503,503,571,571,646,646,728,728,817, 817,913] |