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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 4 |
| 3 | 8 |
| 4 | 19 |
| 5 | 37 |
| 6 | 84 |
| 7 | 154 |
| 8 | 313 |
| 9 | 581 |
| 10 | 1109 |
| 11 | 2001 |
| 12 | 3696 |
| 13 | 6518 |
| 14 | 11637 |
| 15 | 20215 |
| 16 | 35173 |
| 17 | 60007 |
| 18 | 102404 |
| 19 | 171960 |
| 20 | 288286 |
| 21 | 477586 |
| 22 | 788527 |
| 23 | 1289539 |
| 24 | 2101394 |
| 25 | 3396594 |
| 26 | 5469267 |
| 27 | 8747285 |
| 28 | 13934572 |
| 29 | 22068218 |
| 30 | 34815513 |
| 31 | 54640049 |
| 32 | 85434022 |
| 33 | 132964684 |
| 34 | 206193983 |
| 35 | 318414629 |
[1,1,4,8,19,37,84,154,313,581,1109,2001,3696,6518, 11637,20215,35173,60007,102404,171960,288286, 477586,788527,1289539,2101394,3396594,5469267, 8747285,13934572,22068218,34815513,54640049, 85434022,132964684,206193983,318414629] |