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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 6 |
| 6 | 11 |
| 7 | 21 |
| 8 | 39 |
| 9 | 75 |
| 10 | 143 |
| 11 | 275 |
| 12 | 528 |
| 13 | 1020 |
| 14 | 1971 |
| 15 | 3821 |
| 16 | 7415 |
| 17 | 14420 |
| 18 | 28075 |
| 19 | 54743 |
| 20 | 106858 |
| 21 | 208831 |
| 22 | 408506 |
| 23 | 799864 |
| 24 | 1567456 |
| 25 | 3074126 |
| 26 | 6033392 |
| 27 | 11849448 |
| 28 | 23286686 |
| 29 | 45790393 |
| 30 | 90090747 |
| 31 | 177341817 |
| 32 | 349263347 |
| 33 | 688166834 |
| 34 | 1356505890 |
[1,1,1,2,3,6,11,21,39,75,143,275,528,1020,1971, 3821,7415,14420,28075,54743,106858,208831,408506, 799864,1567456,3074126,6033392,11849448,23286686, 45790393,90090747,177341817,349263347,688166834, 1356505890] |