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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 3 |
| 4 | 4 |
| 5 | 8 |
| 6 | 14 |
| 7 | 25 |
| 8 | 46 |
| 9 | 84 |
| 10 | 153 |
| 11 | 279 |
| 12 | 509 |
| 13 | 927 |
| 14 | 1691 |
| 15 | 3082 |
| 16 | 5618 |
| 17 | 10241 |
| 18 | 18667 |
| 19 | 34028 |
| 20 | 62029 |
| 21 | 113070 |
| 22 | 206113 |
| 23 | 375719 |
| 24 | 684889 |
| 25 | 1248467 |
| 26 | 2275800 |
| 27 | 4148501 |
| 28 | 7562201 |
| 29 | 13784953 |
| 30 | 25128255 |
| 31 | 45805684 |
| 32 | 83498067 |
| 33 | 152206593 |
| 34 | 277453693 |
| 35 | 505763582 |
[1,1,3,4,8,14,25,46,84,153,279,509,927,1691,3082, 5618,10241,18667,34028,62029,113070,206113,375719, 684889,1248467,2275800,4148501,7562201,13784953, 25128255,45805684,83498067,152206593,277453693, 505763582] |