The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 369 |
| 2 | 1791 |
| 3 | 9831 |
| 4 | 60108 |
| 5 | 387267 |
| 6 | 2554848 |
| 7 | 17051166 |
| 8 | 114537918 |
| 9 | 772431777 |
| 10 | 5222734311 |
| 11 | 35375284446 |
| 12 | 239899338933 |
| 13 | 1628261283648 |
| 14 | 11057930844258 |
| 15 | 75127872458898 |
| 16 | 510566050100991 |
| 17 | 3470474714680779 |
| 18 | 23593143064954278 |
[369,1791,9831,60108,387267,2554848,17051166, 114537918,772431777,5222734311,35375284446, 239899338933,1628261283648,11057930844258, 75127872458898,510566050100991,3470474714680779, 23593143064954278] |