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 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 11 |
| 5 | 33 |
| 6 | 145 |
| 7 | 848 |
| 8 | 7111 |
| 9 | 77067 |
| 10 | 1007506 |
| 11 | 15150150 |
| 12 | 259469001 |
[1,2,4,11,33,145,848,7111,77067,1007506,15150150, 259469001] |