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| n | a(n) |
|---|---|
| 3 | 0 |
| 4 | 1 |
| 5 | 5 |
| 6 | 4 |
| 7 | 7 |
| 8 | 28 |
| 9 | 56 |
| 10 | 88 |
| 11 | 273 |
| 12 | 704 |
| 13 | 1404 |
| 14 | 3306 |
| 15 | 8909 |
| 16 | 20480 |
| 17 | 48398 |
| 18 | 127006 |
| 19 | 319884 |
| 20 | 798692 |
| 21 | 2086829 |
| 22 | 5463093 |
| 23 | 14217823 |
| 24 | 37523124 |
| 25 | 99719864 |
| 26 | 264753849 |
| 27 | 705230927 |
| 28 | 1885628860 |
| 29 | 5045425984 |
| 30 | 13512836428 |
| 31 | 36254450471 |
[0,1,5,4,7,28,56,88,273,704,1404,3306,8909,20480, 48398,127006,319884,798692,2086829,5463093, 14217823,37523124,99719864,264753849,705230927, 1885628860,5045425984,13512836428,36254450471] |