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) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 3 |
| 5 | 17 |
| 6 | 74 |
| 7 | 343 |
| 8 | 1603 |
| 9 | 7807 |
[0,0,1,3,17,74,343,1603,7807] |