| n | a(n) |
|---|---|
| 1 | 1099 |
| 2 | 1098 |
| 3 | 2348 |
| 4 | 3796 |
| 5 | 11409 |
| 6 | 30724 |
| 7 | 53782 |
| 8 | 173544 |
| 9 | 488169 |
| 10 | 862550 |
| 11 | 2861114 |
| 12 | 8190964 |
| 13 | 14510150 |
| 14 | 48759525 |
| 15 | 140792605 |
| 16 | 249710691 |
| 17 | 844670520 |
| 18 | 2449784273 |
| 19 | 4347633163 |
| 20 | 14756809096 |
| 21 | 42898150674 |
| 22 | 76155945522 |
| 23 | 258954750275 |
[1099,1098,2348,3796,11409,30724,53782,173544, 488169,862550,2861114,8190964,14510150,48759525, 140792605,249710691,844670520,2449784273, 4347633163,14756809096,42898150674,76155945522, 258954750275] |