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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 7 |
| 3 | 19 |
| 4 | 65 |
| 5 | 2094 |
| 6 | 23229 |
| 7 | 65452 |
| 8 | 35294211 |
| 9 | 2468446765 |
| 10 | 113516758846 |
| 11 | 82731232832507 |
[0,7,19,65,2094,23229,65452,35294211,2468446765, 113516758846,82731232832507] |