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| 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 | 49 |
| 21 | 49 |
| 22 | 60 |
| 23 | 60 |
| 24 | 73 |
| 25 | 73 |
| 26 | 87 |
| 27 | 87 |
| 28 | 103 |
| 29 | 103 |
| 30 | 121 |
| 31 | 121 |
| 32 | 141 |
| 33 | 141 |
| 34 | 163 |
| 35 | 163 |
| 36 | 187 |
| 37 | 187 |
| 38 | 213 |
| 39 | 213 |
| 40 | 242 |
| 41 | 242 |
| 42 | 273 |
| 43 | 273 |
| 44 | 307 |
| 45 | 307 |
| 46 | 343 |
| 47 | 343 |
| 48 | 382 |
| 49 | 382 |
| 50 | 424 |
| 51 | 424 |
| 52 | 469 |
| 53 | 469 |
| 54 | 517 |
| 55 | 517 |
| 56 | 568 |
| 57 | 568 |
| 58 | 622 |
| 59 | 622 |
[1,1,2,2,4,4,6,6,9,9,13,13,18,18,24,24,31,31,39, 39,49,49,60,60,73,73,87,87,103,103,121,121,141, 141,163,163,187,187,213,213,242,242,273,273,307, 307,343,343,382,382,424,424,469,469,517,517,568, 568,622,622] |