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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 | 9 |
| 7 | 23 |
| 8 | 64 |
| 9 | 295 |
| 10 | 1072 |
| 11 | 4637 |
| 12 | 27060 |
| 13 | 195073 |
| 14 | 1617157 |
| 15 | 15822995 |
| 16 | 190207942 |
| 17 | 2553434864 |
| 18 | 40752029560 |
[1,1,1,1,1,9,23,64,295,1072,4637,27060,195073, 1617157,15822995,190207942,2553434864,40752029560] |