| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 8 |
| 4 | 17 |
| 5 | 35 |
| 6 | 72 |
| 7 | 149 |
| 8 | 308 |
| 9 | 636 |
| 10 | 1314 |
| 11 | 2715 |
| 12 | 5609 |
| 13 | 11588 |
| 14 | 23941 |
| 15 | 49462 |
| 16 | 102188 |
| 17 | 211120 |
| 18 | 436173 |
| 19 | 901131 |
| 20 | 1861732 |
| 21 | 3846329 |
| 22 | 7946496 |
| 23 | 16417420 |
| 24 | 33918306 |
| 25 | 70075047 |
| 26 | 144774689 |
| 27 | 299103768 |
| 28 | 617946857 |
| 29 | 1276675050 |
| 30 | 2637604132 |
| 31 | 5449276664 |
| 32 | 11258177753 |
| 33 | 23259337731 |
[1,2,4,8,17,35,72,149,308,636,1314,2715,5609, 11588,23941,49462,102188,211120,436173,901131, 1861732,3846329,7946496,16417420,33918306, 70075047,144774689,299103768,617946857,1276675050, 2637604132,5449276664,11258177753,23259337731] |