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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 6 |
| 6 | 9 |
| 7 | 14 |
| 8 | 24 |
| 9 | 42 |
| 10 | 75 |
| 11 | 136 |
| 12 | 258 |
| 13 | 492 |
| 14 | 942 |
| 15 | 1809 |
| 16 | 3482 |
| 17 | 6828 |
| 18 | 13398 |
| 19 | 26304 |
| 20 | 51666 |
| 21 | 101523 |
| 22 | 199564 |
| 23 | 395646 |
| 24 | 784464 |
| 25 | 1555530 |
| 26 | 3084756 |
| 27 | 6117846 |
| 28 | 12134169 |
| 29 | 24068774 |
| 30 | 47937984 |
| 31 | 95480322 |
| 32 | 190176180 |
| 33 | 378796830 |
| 34 | 754508904 |
| 35 | 1502899962 |
[0,1,2,3,4,6,9,14,24,42,75,136,258,492,942,1809, 3482,6828,13398,26304,51666,101523,199564,395646, 784464,1555530,3084756,6117846,12134169,24068774, 47937984,95480322,190176180,378796830,754508904, 1502899962] |