n | a(n) |
---|---|
1 | 1 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 0 |
7 | 0 |
8 | 0 |
9 | 0 |
10 | 72 |
11 | 288 |
12 | 3600 |
13 | 17856 |
14 | 174528 |
15 | 2540160 |
16 | 14768640 |
17 | 101030400 |
18 | 1458266112 |
19 | 11316188160 |
20 | 140951577600 |
21 | 2659218508800 |
22 | 30255151463424 |
23 | 287496736542720 |
24 | 5064092578713600 |
25 | 76356431941939200 |
26 | 987682437203558400 |
27 | 19323690313219522560 |
[1,0,0,0,0,0,0,0,0,72,288,3600,17856,174528, 2540160,14768640,101030400,1458266112,11316188160, 140951577600,2659218508800,30255151463424, 287496736542720,5064092578713600, 76356431941939200,987682437203558400, 19323690313219522560] |