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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 3 |
| 6 | 2 |
| 7 | 9 |
| 8 | 8 |
| 9 | 35 |
| 10 | 39 |
| 11 | 159 |
| 12 | 202 |
| 13 | 802 |
| 14 | 1078 |
| 15 | 4347 |
| 16 | 6354 |
| 17 | 24894 |
| 18 | 38157 |
| 19 | 148284 |
| 20 | 237541 |
| 21 | 910726 |
| 22 | 1511717 |
| 23 | 5731580 |
| 24 | 9816092 |
| 25 | 36797588 |
| 26 | 64658432 |
| 27 | 240215803 |
| 28 | 431987953 |
| 29 | 1590507121 |
| 30 | 2917928218 |
| 31 | 10660307791 |
| 32 | 19910436898 |
[1,0,1,1,3,2,9,8,35,39,159,202,802,1078,4347,6354, 24894,38157,148284,237541,910726,1511717,5731580, 9816092,36797588,64658432,240215803,431987953, 1590507121,2917928218,10660307791,19910436898] |