The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 24 |
| 5 | 120 |
| 6 | 720 |
| 7 | 5040 |
| 8 | 40320 |
| 9 | 362880 |
| 10 | 3456000 |
| 11 | 35759520 |
| 12 | 400628736 |
| 13 | 4789308672 |
| 14 | 61341750208 |
| 15 | 840540050688 |
| 16 | 12292652292672 |
[1,2,6,24,120,720,5040,40320,362880,3456000, 35759520,400628736,4789308672,61341750208, 840540050688,12292652292672] |