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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 45 |
| 2 | 1575 |
| 3 | 315315 |
| 4 | 6891885 |
| 5 | 160044885 |
| 6 | 21751554825 |
| 7 | 2183521465125 |
| 8 | 76714387474725 |
| 9 | 3172365552631275 |
| 10 | 143758249516606725 |
| 11 | 6770328989139240525 |
| 12 | 2421128518942184926875 |
| 13 | 138585396424250665214325 |
| 14 | 148850981344565529304275 |
| 15 | 572660521987304535825815775 |
| 16 | 46892797085809056283503525 |
[1,45,1575,315315,6891885,160044885,21751554825, 2183521465125,76714387474725,3172365552631275, 143758249516606725,6770328989139240525, 2421128518942184926875,138585396424250665214325, 148850981344565529304275, 572660521987304535825815775, 46892797085809056283503525] |