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 | 6 |
| 4 | 16 |
| 5 | 55 |
| 6 | 139 |
| 7 | 516 |
| 8 | 1500 |
| 9 | 5269 |
| 10 | 17017 |
[1,1,2,6,16,55,139,516,1500,5269,17017] |