The OEIS is supported by the many generous donors to the OEIS Foundation.
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 | 5 |
| 3 | 31 |
| 4 | 268 |
| 5 | 3476 |
| 6 | 70656 |
| 7 | 2202432 |
| 8 | 98622336 |
| 9 | 5954736384 |
| 10 | 463100042880 |
| 11 | 44924476970880 |
| 12 | 5308404719823360 |
| 13 | 749930460864929280 |
| 14 | 124754522068412651520 |
| 15 | 24129984694192721971200 |
| 16 | 5368254991077002482483200 |
| 17 | 1360938718277588430567014400 |
| 18 | 389980903967231535140578099200 |
[0,1,5,31,268,3476,70656,2202432,98622336, 5954736384,463100042880,44924476970880, 5308404719823360,749930460864929280, 124754522068412651520,24129984694192721971200, 5368254991077002482483200, 1360938718277588430567014400, 389980903967231535140578099200] |