| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 14 |
| 2 | 104 |
| 3 | 545 |
| 4 | 2260 |
| 5 | 7889 |
| 6 | 24087 |
| 7 | 66013 |
| 8 | 165425 |
| 9 | 384320 |
| 10 | 836604 |
| 11 | 1720774 |
| 12 | 3366951 |
| 13 | 6301715 |
| 14 | 11333950 |
| 15 | 19664205 |
| 16 | 33018831 |
| 17 | 53808313 |
| 18 | 85306779 |
| 19 | 131846699 |
| 20 | 199019426 |
| 21 | 293868698 |
| 22 | 425060810 |
| 23 | 603012233 |
| 24 | 839953393 |
| 25 | 1149906518 |
[1,14,104,545,2260,7889,24087,66013,165425,384320, 836604,1720774,3366951,6301715,11333950,19664205, 33018831,53808313,85306779,131846699,199019426, 293868698,425060810,603012233,839953393, 1149906518] |