n | a(n) |
---|---|
4 | -15 |
5 | -48 |
6 | 2024 |
7 | 31616 |
8 | 274480 |
9 | 1784320 |
10 | 9645312 |
11 | 45735936 |
12 | 196441344 |
13 | 780595200 |
14 | 2912532480 |
15 | 10315202560 |
16 | 34963222528 |
17 | 114140905472 |
18 | 360716042240 |
19 | 1108051230720 |
20 | 3319564664832 |
21 | 9726122262528 |
22 | 27935264735232 |
23 | 78810426900480 |
24 | 218761889054720 |
25 | 598349308755968 |
[-15,-48,2024,31616,274480,1784320,9645312, 45735936,196441344,780595200,2912532480, 10315202560,34963222528,114140905472,360716042240, 1108051230720,3319564664832,9726122262528, 27935264735232,78810426900480,218761889054720, 598349308755968] |