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 | 1 |
| 3 | 3 |
| 4 | 13 |
| 5 | 39 |
| 6 | 539 |
| 7 | 2631 |
| 8 | 4283 |
| 9 | 13595 |
[0,1,3,13,39,539,2631,4283,13595] |