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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 3 |
| 7 | 10 |
| 8 | 12 |
| 9 | 23 |
| 10 | 35 |
| 11 | 169 |
| 12 | 255 |
| 13 | 817 |
| 14 | 1883 |
| 15 | 4702 |
| 16 | 10489 |
[1,0,1,1,1,3,10,12,23,35,169,255,817,1883,4702, 10489] |