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| n | a(n) |
|---|---|
| 1 | 119040 |
| 2 | 2589968 |
| 3 | 50414592 |
| 4 | 1052857184 |
| 5 | 20975776000 |
| 6 | 424261181216 |
| 7 | 8415694011136 |
| 8 | 167533350155040 |
| 9 | 3315015958304000 |
| 10 | 65750261230687264 |
| 11 | 1301328247318549760 |
| 12 | 25772170438510291232 |
| 13 | 509844817010765307136 |
[119040,2589968,50414592,1052857184,20975776000, 424261181216,8415694011136,167533350155040, 3315015958304000,65750261230687264, 1301328247318549760,25772170438510291232, 509844817010765307136] |