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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) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 18 |
| 5 | 176 |
| 6 | 630 |
| 7 | 7710 |
| 8 | 27594 |
| 9 | 356960 |
| 10 | 18407808 |
| 11 | 69273666 |
| 12 | 3697909056 |
| 13 | 53630700752 |
| 14 | 204064589160 |
| 15 | 2992477516800 |
| 16 | 169917983040000 |
| 17 | 9770466930024800 |
| 18 | 37800705069076950 |
| 19 | 2202596295934991760 |
[0,1,2,6,18,176,630,7710,27594,356960,18407808, 69273666,3697909056,53630700752,204064589160, 2992477516800,169917983040000,9770466930024800, 37800705069076950,2202596295934991760] |