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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 3 |
| 3 | 34 |
| 4 | 987 |
| 5 | 75025 |
| 6 | 14930352 |
| 7 | 7778742049 |
| 8 | 10610209857723 |
| 9 | 37889062373143906 |
| 10 | 354224848179261915075 |
| 11 | 8670007398507948658051921 |
| 12 | 555565404224292694404015791808 |
| 13 | 93202207781383214849429075266681969 |
| 14 | 40934782466626840596168752972961528246147 |
[0,1,3,34,987,75025,14930352,7778742049, 10610209857723,37889062373143906, 354224848179261915075,8670007398507948658051921, 555565404224292694404015791808, 93202207781383214849429075266681969, 40934782466626840596168752972961528246147] |