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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 4 |
| 5 | 8 |
| 6 | 15 |
| 7 | 28 |
| 8 | 53 |
| 9 | 102 |
| 10 | 199 |
| 11 | 391 |
| 12 | 773 |
| 13 | 1537 |
| 14 | 3075 |
| 15 | 6189 |
| 16 | 12525 |
| 17 | 25473 |
| 18 | 52037 |
| 19 | 106737 |
| 20 | 219761 |
| 21 | 454041 |
| 22 | 941089 |
| 23 | 1956357 |
| 24 | 4078010 |
| 25 | 8522016 |
| 26 | 17850512 |
| 27 | 37471531 |
| 28 | 78818748 |
| 29 | 166102378 |
| 30 | 350660371 |
| 31 | 741503529 |
| 32 | 1570402564 |
| 33 | 3330730115 |
| 34 | 7073941610 |
| 35 | 15043298781 |
[1,1,1,2,4,8,15,28,53,102,199,391,773,1537,3075, 6189,12525,25473,52037,106737,219761,454041, 941089,1956357,4078010,8522016,17850512,37471531, 78818748,166102378,350660371,741503529,1570402564, 3330730115,7073941610,15043298781] |