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| n | a(n) |
|---|---|
| 3 | 0 |
| 4 | 0 |
| 5 | 5 |
| 6 | 1 |
| 7 | 2 |
| 8 | 32 |
| 9 | 39 |
| 10 | 85 |
| 11 | 333 |
| 12 | 595 |
| 13 | 1284 |
| 14 | 3951 |
| 15 | 9281 |
| 16 | 22166 |
| 17 | 60247 |
| 18 | 152990 |
| 19 | 381931 |
| 20 | 999142 |
| 21 | 2613381 |
| 22 | 6784949 |
| 23 | 17834632 |
| 24 | 47199686 |
| 25 | 124739534 |
| 26 | 330693220 |
| 27 | 881375746 |
| 28 | 2352511702 |
| 29 | 6288618559 |
| 30 | 16865035451 |
[0,0,5,1,2,32,39,85,333,595,1284,3951,9281,22166, 60247,152990,381931,999142,2613381,6784949, 17834632,47199686,124739534,330693220,881375746, 2352511702,6288618559,16865035451] |