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| n | a(n) |
|---|---|
| 1 | 12 |
| 2 | 120 |
| 3 | 30240 |
| 4 | 17297280 |
| 5 | 28158588057600 |
| 6 | 64764752532480000 |
| 7 | 830034394580628357120000 |
| 8 | 4299578163927654889881600000 |
| 9 | 212850788988365112429784203264000000 |
| 10 | 265847614191284935213187014536606662000640000000 |
[12,120,30240,17297280,28158588057600, 64764752532480000,830034394580628357120000, 4299578163927654889881600000, 212850788988365112429784203264000000, 265847614191284935213187014536606662000640000000] |