n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 24 |
4 | 192 |
5 | 1880 |
6 | 21312 |
7 | 266504 |
8 | 3469312 |
9 | 42094656 |
10 | 297625600 |
11 | -8727514752 |
12 | -659406274560 |
13 | -31019532622208 |
14 | -1314656227540992 |
15 | -54314985911216640 |
16 | -2248955319931633664 |
17 | -94369141109824233472 |
18 | -4028982346754921594880 |
19 | -175032005028072692797440 |
[1,1,4,24,192,1880,21312,266504,3469312,42094656, 297625600,-8727514752,-659406274560, -31019532622208,-1314656227540992, -54314985911216640,-2248955319931633664, -94369141109824233472,-4028982346754921594880, -175032005028072692797440] |