| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 2 |
| 4 | 4 |
| 5 | 7 |
| 6 | 15 |
| 7 | 29 |
| 8 | 58 |
| 9 | 114 |
| 10 | 231 |
| 11 | 461 |
| 12 | 922 |
| 13 | 1842 |
| 14 | 3681 |
| 15 | 7354 |
| 16 | 14694 |
| 17 | 29359 |
| 18 | 58775 |
| 19 | 117549 |
| 20 | 235098 |
| 21 | 470194 |
| 22 | 940385 |
| 23 | 1880762 |
| 24 | 3761510 |
| 25 | 7522991 |
| 26 | 15045926 |
| 27 | 30091735 |
| 28 | 60183240 |
| 29 | 120366019 |
| 30 | 240731118 |
| 31 | 481460397 |
| 32 | 962917121 |
| 33 | 1925826902 |
[1,2,2,4,7,15,29,58,114,231,461,922,1842,3681, 7354,14694,29359,58775,117549,235098,470194, 940385,1880762,3761510,7522991,15045926,30091735, 60183240,120366019,240731118,481460397,962917121, 1925826902] |