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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 | 0 |
| 2 | 2 |
| 3 | 22 |
| 4 | 140 |
| 5 | 680 |
| 6 | 2800 |
| 7 | 10304 |
| 8 | 34944 |
| 9 | 111360 |
| 10 | 337920 |
| 11 | 985600 |
| 12 | 2782208 |
| 13 | 7641088 |
[0,2,22,140,680,2800,10304,34944,111360,337920, 985600,2782208,7641088] |