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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 5 |
| 4 | 10 |
| 5 | 17 |
| 6 | 44 |
| 7 | 87 |
| 8 | 174 |
| 9 | 324 |
| 10 | 822 |
| 11 | 1707 |
| 12 | 3414 |
| 13 | 6595 |
| 14 | 16604 |
| 15 | 35300 |
| 16 | 70600 |
| 17 | 139114 |
| 18 | 348828 |
| 19 | 751901 |
| 20 | 1503802 |
| 21 | 3000177 |
| 22 | 7504156 |
| 23 | 16322561 |
| 24 | 32645122 |
| 25 | 65684626 |
| 26 | 164014374 |
| 27 | 359049028 |
| 28 | 718098056 |
| 29 | 1453825024 |
| 30 | 3625748104 |
[1,1,3,5,10,17,44,87,174,324,822,1707,3414,6595, 16604,35300,70600,139114,348828,751901,1503802, 3000177,7504156,16322561,32645122,65684626, 164014374,359049028,718098056,1453825024, 3625748104] |