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| n | a(n) |
|---|---|
| 9 | 1 |
| 10 | 11 |
| 11 | 67 |
| 12 | 298 |
| 13 | 1080 |
| 14 | 3379 |
| 15 | 9453 |
| 16 | 24204 |
| 17 | 57658 |
| 18 | 129335 |
| 19 | 275693 |
| 20 | 562454 |
| 21 | 1104484 |
| 22 | 2097247 |
| 23 | 3865383 |
| 24 | 6937016 |
| 25 | 12154390 |
| 26 | 20838939 |
| 27 | 35029203 |
| 28 | 57829458 |
| 29 | 93897437 |
| 30 | 150150058 |
| 31 | 236723504 |
| 32 | 368350864 |
| 33 | 566187387 |
| 34 | 860416074 |
| 35 | 1293614426 |
| 36 | 1925547270 |
| 37 | 2839214222 |
| 38 | 4149449828 |
[1,11,67,298,1080,3379,9453,24204,57658,129335, 275693,562454,1104484,2097247,3865383,6937016, 12154390,20838939,35029203,57829458,93897437, 150150058,236723504,368350864,566187387,860416074, 1293614426,1925547270,2839214222,4149449828] |