Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 2 |
3 | -6 |
4 | 14 |
5 | -20 |
6 | -36 |
7 | 336 |
8 | 720 |
9 | -38016 |
10 | 524160 |
11 | -5448960 |
12 | 50388480 |
13 | -465903360 |
14 | 5010888960 |
15 | -69353625600 |
16 | 1155961497600 |
17 | -20593469030400 |
18 | 370356373094400 |
19 | -6695551947571200 |
20 | 124010190839808000 |
21 | -2408196729028608000 |
[0,0,2,-6,14,-20,-36,336,720,-38016,524160, -5448960,50388480,-465903360,5010888960, -69353625600,1155961497600,-20593469030400, 370356373094400,-6695551947571200, 124010190839808000,-2408196729028608000] |