n | a(n) |
---|---|
0 | 1 |
1 | -4 |
2 | 12 |
3 | -40 |
4 | 124 |
5 | -408 |
6 | 1272 |
7 | -4176 |
8 | 13020 |
9 | -42808 |
10 | 133096 |
11 | -439344 |
12 | 1358872 |
13 | -4514800 |
14 | 13853040 |
15 | -46469280 |
16 | 140945820 |
17 | -479312760 |
18 | 1430085000 |
19 | -4958382960 |
20 | 14453014920 |
21 | -51500944080 |
22 | 145230007440 |
23 | -537922074720 |
24 | 1446902948184 |
25 | -5662012752048 |
26 | 14228883685392 |
[1,-4,12,-40,124,-408,1272,-4176,13020,-42808, 133096,-439344,1358872,-4514800,13853040, -46469280,140945820,-479312760,1430085000, -4958382960,14453014920,-51500944080,145230007440, -537922074720,1446902948184,-5662012752048, 14228883685392] |