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 | 1 |
| 3 | 2 |
| 4 | 5 |
| 5 | 14 |
| 6 | 49 |
| 7 | 188 |
| 8 | 838 |
| 9 | 4182 |
| 10 | 23706 |
| 11 | 153622 |
| 12 | 1167627 |
| 13 | 10779405 |
| 14 | 126598717 |
| 15 | 1980053453 |
[1,1,2,5,14,49,188,838,4182,23706,153622,1167627, 10779405,126598717,1980053453] |