The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 10 |
| 5 | 26 |
| 6 | 96 |
| 7 | 553 |
| 8 | 5461 |
| 9 | 100709 |
| 10 | 3718353 |
| 11 | 286007155 |
| 12 | 32121018248 |
| 13 | 2641102182925 |
| 14 | 135759833224363 |
| 15 | 4635201718175448 |
| 16 | 113247016996007525 |
| 17 | 2101126725683521037 |
| 18 | 30975390230263001230 |
| 19 | 375710371221886207918 |
[2,3,5,10,26,96,553,5461,100709,3718353,286007155, 32121018248,2641102182925,135759833224363, 4635201718175448,113247016996007525, 2101126725683521037,30975390230263001230, 375710371221886207918] |