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 | 1 |
| 3 | 3 |
| 4 | 3 |
| 5 | 5 |
| 6 | 6 |
| 7 | 18 |
| 8 | 45 |
| 9 | 147 |
| 10 | 147 |
| 11 | 267 |
| 12 | 801 |
| 13 | 2538 |
| 14 | 3255 |
| 15 | 7665 |
| 16 | 29484 |
| 17 | 67644 |
| 18 | 164088 |
| 19 | 515592 |
| 20 | 1657785 |
[1,1,1,3,3,5,6,18,45,147,147,267,801,2538,3255, 7665,29484,67644,164088,515592,1657785] |