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 | 1 |
| 4 | 1 |
| 5 | 5 |
| 6 | 13 |
| 7 | 49 |
| 8 | 193 |
| 9 | 1049 |
| 10 | 4657 |
| 11 | 30659 |
| 12 | 227143 |
| 13 | 2543595 |
| 14 | 27086837 |
| 15 | 477421833 |
| 16 | 7701671605 |
[1,1,1,1,5,13,49,193,1049,4657,30659,227143, 2543595,27086837,477421833,7701671605] |