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 | 1 |
| 8 | 1 |
| 9 | 3 |
| 10 | 3 |
| 11 | 5 |
| 12 | 5 |
| 13 | 9 |
| 14 | 9 |
| 15 | 19 |
| 16 | 19 |
| 17 | 55 |
| 18 | 55 |
| 19 | 245 |
| 20 | 245 |
| 21 | 1021 |
| 22 | 1021 |
| 23 | 4107 |
| 24 | 4107 |
| 25 | 20679 |
| 26 | 20679 |
[1,1,1,1,1,1,1,1,3,3,5,5,9,9,19,19,55,55,245,245, 1021,1021,4107,4107,20679,20679] |