| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 5 |
| 4 | 7 |
| 5 | 12 |
| 6 | 391 |
| 7 | 403 |
| 8 | 794 |
| 9 | 1991 |
| 10 | 2785 |
| 11 | 4776 |
| 12 | 155617 |
| 13 | 160393 |
| 14 | 316010 |
| 15 | 792413 |
| 16 | 1108423 |
| 17 | 1900836 |
| 18 | 61935175 |
| 19 | 63836011 |
| 20 | 125771186 |
| 21 | 315378383 |
| 22 | 441149569 |
| 23 | 756527952 |
| 24 | 24650044033 |
| 25 | 25406571985 |
| 26 | 50056616018 |
| 27 | 125519804021 |
| 28 | 175576420039 |
| 29 | 301096224060 |
[1,1,2,5,7,12,391,403,794,1991,2785,4776,155617, 160393,316010,792413,1108423,1900836,61935175, 63836011,125771186,315378383,441149569,756527952, 24650044033,25406571985,50056616018,125519804021, 175576420039,301096224060] |