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 | 1 |
| 6 | 1 |
| 7 | 3 |
| 8 | 3 |
| 9 | 5 |
| 10 | 5 |
| 11 | 9 |
| 12 | 9 |
| 13 | 21 |
| 14 | 21 |
| 15 | 93 |
| 16 | 93 |
| 17 | 381 |
| 18 | 381 |
| 19 | 1551 |
| 20 | 1551 |
| 21 | 7459 |
| 22 | 7459 |
| 23 | 56347 |
| 24 | 56347 |
| 25 | 473995 |
| 26 | 473995 |
| 27 | 4321181 |
[1,1,1,1,1,1,3,3,5,5,9,9,21,21,93,93,381,381,1551, 1551,7459,7459,56347,56347,473995,473995,4321181] |