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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 3 |
| 4 | 5 |
| 5 | 12 |
| 6 | 25 |
| 7 | 54 |
| 8 | 113 |
| 9 | 235 |
| 10 | 481 |
| 11 | 980 |
| 12 | 1985 |
| 13 | 4007 |
| 14 | 8065 |
| 15 | 16204 |
| 16 | 32513 |
| 17 | 65175 |
| 18 | 130561 |
| 19 | 261421 |
| 20 | 523265 |
| 21 | 1047129 |
| 22 | 2095105 |
| 23 | 4191409 |
| 24 | 8384513 |
| 25 | 16771425 |
| 26 | 33546241 |
| 27 | 67097280 |
| 28 | 134201345 |
| 29 | 268412287 |
| 30 | 536838145 |
| 31 | 1073695485 |
| 32 | 2147418113 |
[1,1,3,5,12,25,54,113,235,481,980,1985,4007,8065, 16204,32513,65175,130561,261421,523265,1047129, 2095105,4191409,8384513,16771425,33546241, 67097280,134201345,268412287,536838145,1073695485, 2147418113] |