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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 0 |
| 4 | 3 |
| 5 | 3 |
| 6 | 5 |
| 7 | 4 |
| 8 | 21 |
| 9 | 32 |
| 10 | 69 |
| 11 | 96 |
| 12 | 229 |
| 13 | 335 |
| 14 | 768 |
| 15 | 1116 |
| 16 | 2860 |
| 17 | 4371 |
| 18 | 10252 |
| 19 | 15490 |
| 20 | 36563 |
| 21 | 58041 |
| 22 | 133739 |
| 23 | 209875 |
| 24 | 491193 |
| 25 | 795599 |
| 26 | 1816561 |
| 27 | 2951789 |
| 28 | 6772098 |
| 29 | 11144763 |
| 30 | 25284670 |
| 31 | 41781268 |
| 32 | 94895078 |
| 33 | 158643268 |
[0,1,0,3,3,5,4,21,32,69,96,229,335,768,1116,2860, 4371,10252,15490,36563,58041,133739,209875,491193, 795599,1816561,2951789,6772098,11144763,25284670, 41781268,94895078,158643268] |