n | a(n) |
---|---|
0 | 0 |
1 | -1 |
2 | 0 |
3 | -16 |
4 | 65 |
5 | -560 |
6 | 3536 |
7 | -25025 |
8 | 169456 |
9 | -1166880 |
10 | 7983745 |
11 | -54758496 |
12 | 375223200 |
13 | -2572072321 |
14 | 17628580320 |
15 | -120829829680 |
16 | 828175410881 |
17 | -5676410656400 |
18 | 38906666170736 |
19 | -266670338968385 |
20 | 1827785480332240 |
21 | -12527828615754816 |
22 | 85867013279034625 |
23 | -588541268397840576 |
24 | 4033921854875707200 |
25 | -27648911743562183425 |
[0,-1,0,-16,65,-560,3536,-25025,169456,-1166880, 7983745,-54758496,375223200,-2572072321, 17628580320,-120829829680,828175410881, -5676410656400,38906666170736,-266670338968385, 1827785480332240,-12527828615754816, 85867013279034625,-588541268397840576, 4033921854875707200,-27648911743562183425] |