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 | 6 |
| 2 | 18 |
| 3 | -36 |
| 4 | -360 |
| 5 | -1350 |
| 6 | 27162 |
| 7 | 337608 |
| 8 | -606528 |
| 9 | -90432450 |
| 10 | -880859934 |
| 11 | 18455713503 |
| 12 | 693789107544 |
| 13 | 1701104157090 |
| 14 | -385899715094310 |
| 15 | -8961561593356464 |
| 16 | 131483054194960485 |
| 17 | 11226865165557040813 |
| 18 | 130224770734566143291 |
| 19 | -10087278971257481285822 |
[0,6,18,-36,-360,-1350,27162,337608,-606528, -90432450,-880859934,18455713503,693789107544, 1701104157090,-385899715094310,-8961561593356464, 131483054194960485,11226865165557040813, 130224770734566143291,-10087278971257481285822] |