n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 4 |
4 | -20 |
5 | 100 |
6 | -500 |
7 | 2530 |
8 | -12290 |
9 | 63970 |
10 | -310770 |
11 | 1580415 |
12 | -7901235 |
13 | 39580710 |
14 | -199089900 |
15 | 1000497720 |
16 | -5029848484 |
17 | 25374291371 |
18 | -127907347261 |
19 | 646677792365 |
20 | -3273908647705 |
21 | 16606252541363 |
22 | -84435428096707 |
23 | 430294257188507 |
24 | -2198480870662015 |
25 | 11264938277198125 |
[1,1,4,-20,100,-500,2530,-12290,63970,-310770, 1580415,-7901235,39580710,-199089900,1000497720, -5029848484,25374291371,-127907347261, 646677792365,-3273908647705,16606252541363, -84435428096707,430294257188507,-2198480870662015, 11264938277198125] |