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| n | a(n) |
|---|---|
| 6 | 1 |
| 7 | 3 |
| 8 | 10 |
| 9 | 33 |
| 10 | 98 |
| 11 | 291 |
| 12 | 826 |
| 13 | 2284 |
| 14 | 6185 |
| 15 | 16471 |
| 16 | 43156 |
| 17 | 111446 |
| 18 | 284517 |
| 19 | 717486 |
| 20 | 1793081 |
| 21 | 4434929 |
| 22 | 10887761 |
| 23 | 26495243 |
| 24 | 64069055 |
| 25 | 153761086 |
| 26 | 366992020 |
| 27 | 870215947 |
| 28 | 2053484109 |
| 29 | 4818104922 |
| 30 | 11256015936 |
| 31 | 26164409278 |
| 32 | 60583174348 |
| 33 | 139655557194 |
| 34 | 320805463602 |
[1,3,10,33,98,291,826,2284,6185,16471,43156, 111446,284517,717486,1793081,4434929,10887761, 26495243,64069055,153761086,366992020,870215947, 2053484109,4818104922,11256015936,26164409278, 60583174348,139655557194,320805463602] |