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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 3 |
| 3 | 3 |
| 4 | 9 |
| 5 | 11 |
| 6 | 26 |
| 7 | 36 |
| 8 | 71 |
| 9 | 102 |
| 10 | 183 |
| 11 | 268 |
| 12 | 450 |
| 13 | 661 |
| 14 | 1059 |
| 15 | 1554 |
[1,0,3,3,9,11,26,36,71,102,183,268,450,661,1059, 1554] |