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| n | a(n) |
|---|---|
| 1 | 1115136 |
| 2 | 18974736 |
| 3 | 451647504 |
| 4 | 10750371856 |
| 5 | 221012814400 |
| 6 | 4543718560000 |
| 7 | 100604912040000 |
| 8 | 2227547369610000 |
| 9 | 47649380267264400 |
| 10 | 1019266064026229776 |
| 11 | 22202539749936066816 |
| 12 | 483635027933987475456 |
| 13 | 10438893202415728548096 |
[1115136,18974736,451647504,10750371856, 221012814400,4543718560000,100604912040000, 2227547369610000,47649380267264400, 1019266064026229776,22202539749936066816, 483635027933987475456,10438893202415728548096] |