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 | 1 |
| 2 | 2 |
| 3 | 8 |
| 4 | 55 |
| 5 | 567 |
| 6 | 7958 |
| 7 | 142396 |
| 8 | 3104160 |
| 9 | 79813513 |
[1,1,2,8,55,567,7958,142396,3104160,79813513] |