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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 4 |
| 5 | 7 |
| 6 | 13 |
| 7 | 25 |
| 8 | 49 |
| 9 | 94 |
| 10 | 181 |
| 11 | 349 |
| 12 | 673 |
| 13 | 1297 |
| 14 | 2500 |
| 15 | 4819 |
| 16 | 9289 |
| 17 | 17905 |
| 18 | 34513 |
| 19 | 66526 |
| 20 | 128233 |
| 21 | 247177 |
| 22 | 476449 |
| 23 | 918385 |
| 24 | 1770244 |
| 25 | 3412255 |
| 26 | 6577333 |
| 27 | 12678217 |
| 28 | 24438049 |
| 29 | 47105854 |
| 30 | 90799453 |
| 31 | 175021573 |
| 32 | 337364929 |
| 33 | 650291809 |
| 34 | 1253477764 |
[1,1,1,1,4,7,13,25,49,94,181,349,673,1297,2500, 4819,9289,17905,34513,66526,128233,247177,476449, 918385,1770244,3412255,6577333,12678217,24438049, 47105854,90799453,175021573,337364929,650291809, 1253477764] |