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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 17 |
| 5 | 20 |
| 6 | 37 |
| 7 | 57 |
| 8 | 1405 |
| 9 | 1462 |
| 10 | 2867 |
| 11 | 4329 |
| 12 | 24512 |
| 13 | 28841 |
| 14 | 53353 |
| 15 | 82194 |
| 16 | 2026009 |
| 17 | 2108203 |
| 18 | 4134212 |
| 19 | 6242415 |
| 20 | 35346287 |
| 21 | 41588702 |
| 22 | 76934989 |
| 23 | 118523691 |
| 24 | 2921503573 |
| 25 | 3040027264 |
| 26 | 5961530837 |
| 27 | 9001558101 |
| 28 | 50969321342 |
| 29 | 59970879443 |
| 30 | 110940200785 |
| 31 | 170911080228 |
[1,1,2,3,17,20,37,57,1405,1462,2867,4329,24512, 28841,53353,82194,2026009,2108203,4134212,6242415, 35346287,41588702,76934989,118523691,2921503573, 3040027264,5961530837,9001558101,50969321342, 59970879443,110940200785,170911080228] |