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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 | 28 |
| 5 | 180 |
| 6 | 1448 |
| 7 | 13944 |
| 8 | 156592 |
| 9 | 2010000 |
| 10 | 29026592 |
| 11 | 465749856 |
| 12 | 8220541888 |
| 13 | 158283827520 |
| 14 | 3301678947968 |
| 15 | 74168218575744 |
| 16 | 1785106271372032 |
| 17 | 45828856887701760 |
| 18 | 1250094695454351872 |
[0,1,2,6,28,180,1448,13944,156592,2010000, 29026592,465749856,8220541888,158283827520, 3301678947968,74168218575744,1785106271372032, 45828856887701760,1250094695454351872] |