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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 6 |
| 5 | 10 |
| 6 | 16 |
| 7 | 48 |
| 8 | 70 |
| 9 | 1196 |
| 10 | 3958 |
| 11 | 57096 |
| 12 | 59556 |
| 13 | 62440 |
| 14 | 70362 |
[0,1,2,6,10,16,48,70,1196,3958,57096,59556,62440, 70362] |