n | a(n) |
---|---|
1 | 1 |
2 | -2 |
3 | 6 |
4 | -40 |
5 | 320 |
6 | -2976 |
7 | 35392 |
8 | -538112 |
9 | 9931392 |
10 | -211790080 |
11 | 5059784576 |
12 | -132643057152 |
13 | 3761875287040 |
14 | -114501941915648 |
15 | 3725395402721280 |
16 | -129324055589257216 |
17 | 4786638435256696832 |
18 | -188785468724361560064 |
19 | 7922155381738193944576 |
20 | -352740315643746941665280 |
21 | 16603695476218208847691776 |
22 | -822951583413551750366298112 |
23 | 42792449844854211313594597376 |
24 | -2327246576567999111735900897280 |
25 | 132052357036729088907927420928000 |
[1,-2,6,-40,320,-2976,35392,-538112,9931392, -211790080,5059784576,-132643057152,3761875287040, -114501941915648,3725395402721280, -129324055589257216,4786638435256696832, -188785468724361560064,7922155381738193944576, -352740315643746941665280, 16603695476218208847691776, -822951583413551750366298112, 42792449844854211313594597376, -2327246576567999111735900897280, 132052357036729088907927420928000] |