The OEIS is supported by the many generous donors to the OEIS Foundation.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 6 |
| 3 | 24 |
| 4 | 144 |
| 5 | 1080 |
| 6 | 9360 |
| 7 | 94080 |
| 8 | 1078560 |
| 9 | 13789440 |
| 10 | 194745600 |
| 11 | 3013718400 |
| 12 | 50654419200 |
| 13 | 918900702720 |
| 14 | 17896250211840 |
| 15 | 372338481715200 |
| 16 | 8241399758592000 |
| 17 | 193366506222489600 |
| 18 | 4793430516921446400 |
| 19 | 125181207625240166400 |
| 20 | 3435031723216084992000 |
[1,2,6,24,144,1080,9360,94080,1078560,13789440, 194745600,3013718400,50654419200,918900702720, 17896250211840,372338481715200,8241399758592000, 193366506222489600,4793430516921446400, 125181207625240166400,3435031723216084992000] |