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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 2 |
| 5 | 3 |
| 6 | 6 |
| 7 | 8 |
| 8 | 12 |
| 9 | 15 |
| 10 | 21 |
| 11 | 29 |
| 12 | 42 |
| 13 | 53 |
| 14 | 71 |
| 15 | 93 |
| 16 | 123 |
| 17 | 159 |
| 18 | 207 |
| 19 | 262 |
| 20 | 340 |
| 21 | 427 |
| 22 | 544 |
| 23 | 681 |
| 24 | 861 |
| 25 | 1074 |
| 26 | 1335 |
| 27 | 1655 |
| 28 | 2049 |
| 29 | 2521 |
| 30 | 3118 |
| 31 | 3794 |
| 32 | 4648 |
| 33 | 5655 |
| 34 | 6884 |
| 35 | 8358 |
| 36 | 10095 |
| 37 | 12170 |
| 38 | 14669 |
| 39 | 17617 |
| 40 | 21174 |
| 41 | 25274 |
| 42 | 30223 |
| 43 | 36009 |
| 44 | 42877 |
| 45 | 50975 |
[0,1,2,2,3,6,8,12,15,21,29,42,53,71,93,123,159, 207,262,340,427,544,681,861,1074,1335,1655,2049, 2521,3118,3794,4648,5655,6884,8358,10095,12170, 14669,17617,21174,25274,30223,36009,42877,50975] |