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 | 0 |
| 2 | 6 |
| 3 | 9 |
| 4 | 528 |
| 5 | 3150 |
| 6 | 157032 |
| 7 | 2060100 |
| 8 | 102770112 |
| 9 | 2276373456 |
| 10 | 120136435200 |
| 11 | 3868551141840 |
| 12 | 221493499198848 |
| 13 | 9438561453784320 |
| 14 | 592954244405195904 |
| 15 | 31417910131585330080 |
| 16 | 2173884244961012121600 |
| 17 | 137231093173511486016000 |
| 18 | 10452538023125775799541760 |
[1,0,6,9,528,3150,157032,2060100,102770112, 2276373456,120136435200,3868551141840, 221493499198848,9438561453784320, 592954244405195904,31417910131585330080, 2173884244961012121600,137231093173511486016000, 10452538023125775799541760] |