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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 24 |
| 5 | 74 |
| 6 | 372 |
| 7 | 1764 |
| 8 | 9076 |
| 9 | 51988 |
| 10 | 292392 |
| 11 | 2059488 |
| 12 | 14021462 |
| 13 | 105081158 |
| 14 | 851532252 |
| 15 | 6805717470 |
| 16 | 64732937542 |
[1,2,6,24,74,372,1764,9076,51988,292392,2059488, 14021462,105081158,851532252,6805717470, 64732937542] |