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 | 3 |
| 5 | 7 |
| 6 | 15 |
| 7 | 35 |
| 8 | 81 |
| 9 | 195 |
| 10 | 473 |
| 11 | 1170 |
| 12 | 2920 |
| 13 | 7378 |
| 14 | 18787 |
| 15 | 48242 |
| 16 | 124658 |
| 17 | 324095 |
| 18 | 846872 |
| 19 | 2223352 |
| 20 | 5861011 |
| 21 | 15508423 |
| 22 | 41173560 |
| 23 | 109648734 |
[1,1,2,3,7,15,35,81,195,473,1170,2920,7378,18787, 48242,124658,324095,846872,2223352,5861011, 15508423,41173560,109648734] |