n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 6160 |
5 | 27104 |
6 | 157080 |
7 | 633600 |
8 | 2152920 |
9 | 6049120 |
10 | 15601432 |
11 | 37243360 |
12 | 81265800 |
13 | 166554080 |
14 | 325036800 |
15 | 603357216 |
16 | 1082004000 |
17 | 1863350720 |
18 | 3121660080 |
19 | 5069606080 |
20 | 8058310568 |
21 | 12471782400 |
22 | 19002534320 |
23 | 28292374880 |
24 | 41585775000 |
25 | 59922289504 |
26 | 85450069320 |
[1,0,0,0,6160,27104,157080,633600,2152920,6049120, 15601432,37243360,81265800,166554080,325036800, 603357216,1082004000,1863350720,3121660080, 5069606080,8058310568,12471782400,19002534320, 28292374880,41585775000,59922289504,85450069320] |