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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 | 5 |
| 7 | 17 |
| 8 | 37 |
| 9 | 129 |
| 10 | 675 |
| 11 | 4545 |
| 12 | 33673 |
| 13 | 284663 |
| 14 | 3050875 |
| 15 | 41150087 |
| 16 | 686710451 |
| 17 | 13852947253 |
| 18 | 339116701643 |
| 19 | 10235218350849 |
| 20 | 379099740909573 |
[1,1,1,1,1,5,17,37,129,675,4545,33673,284663, 3050875,41150087,686710451,13852947253, 339116701643,10235218350849,379099740909573] |