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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 15 |
| 4 | 115 |
| 5 | 1196 |
| 6 | 16282 |
| 7 | 276158 |
| 8 | 5713507 |
| 9 | 140482000 |
| 10 | 4047179258 |
| 11 | 134447125418 |
| 12 | 5097852537802 |
| 13 | 218254682152053 |
| 14 | 10469861372693621 |
| 15 | 558373926672949031 |
| 16 | 32908746221003292003 |
| 17 | 2130712239317226923136 |
| 18 | 150826951188229240683858 |
| 19 | 11618459541824256750732794 |
[1,1,3,15,115,1196,16282,276158,5713507,140482000, 4047179258,134447125418,5097852537802, 218254682152053,10469861372693621, 558373926672949031,32908746221003292003, 2130712239317226923136,150826951188229240683858, 11618459541824256750732794] |