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| n | a(n) |
|---|---|
| 4 | 1 |
| 5 | 8 |
| 6 | 36 |
| 7 | 124 |
| 8 | 362 |
| 9 | 944 |
| 10 | 2266 |
| 11 | 5100 |
| 12 | 10903 |
| 13 | 22340 |
| 14 | 44168 |
| 15 | 84692 |
| 16 | 158137 |
| 17 | 288452 |
| 18 | 515344 |
| 19 | 903740 |
| 20 | 1558465 |
| 21 | 2646820 |
| 22 | 4432964 |
| 23 | 7329916 |
| 24 | 11977507 |
| 25 | 19358524 |
| 26 | 30970444 |
| 27 | 49077936 |
| 28 | 77081679 |
| 29 | 120054268 |
| 30 | 185514428 |
| 31 | 284540060 |
| 32 | 433360308 |
| 33 | 655622392 |
| 34 | 985604644 |
| 35 | 1472751228 |
[1,8,36,124,362,944,2266,5100,10903,22340,44168, 84692,158137,288452,515344,903740,1558465,2646820, 4432964,7329916,11977507,19358524,30970444, 49077936,77081679,120054268,185514428,284540060, 433360308,655622392,985604644,1472751228] |