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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 12 |
| 2 | 9720 |
| 3 | 212625000 |
| 4 | 350211660750000 |
| 5 | 165830100163770908250000 |
| 6 | 615072417899094252893747931729750000 |
| 7 | 186290124133142953867176980119009688414239626750000 |
| 8 | 309270713892913107006055533400699678031452505346679687500000 |
[1,12,9720,212625000,350211660750000, 165830100163770908250000, 615072417899094252893747931729750000, 18629012413314295386717698011900968841423962675000\ 0, 30927071389291310700605553340069967803145250534667\ 9687500000] |