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| n | a(n) |
|---|---|
| 5 | 1 |
| 6 | 1 |
| 7 | 6 |
| 8 | 12 |
| 9 | 43 |
| 10 | 106 |
| 11 | 322 |
| 12 | 864 |
| 13 | 2483 |
| 14 | 6829 |
| 15 | 19226 |
| 16 | 53293 |
| 17 | 148866 |
| 18 | 413501 |
| 19 | 1151506 |
| 20 | 3200184 |
| 21 | 8901478 |
| 22 | 24742852 |
| 23 | 68800520 |
| 24 | 191275736 |
| 25 | 531888416 |
[1,1,6,12,43,106,322,864,2483,6829,19226,53293, 148866,413501,1151506,3200184,8901478,24742852, 68800520,191275736,531888416] |