n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 756 |
3 | 4032 |
4 | 20412 |
5 | 60480 |
6 | 139860 |
7 | 326592 |
8 | 652428 |
9 | 1020096 |
10 | 2000376 |
11 | 3132864 |
12 | 4445532 |
13 | 7185024 |
14 | 10747296 |
15 | 13148352 |
16 | 21003948 |
17 | 27506304 |
18 | 33724404 |
19 | 48009024 |
20 | 64049832 |
21 | 70709184 |
22 | 102958128 |
23 | 124782336 |
24 | 142254252 |
25 | 189423360 |
26 | 237588120 |
27 | 248250240 |
28 | 344391264 |
[1,0,756,4032,20412,60480,139860,326592,652428, 1020096,2000376,3132864,4445532,7185024,10747296, 13148352,21003948,27506304,33724404,48009024, 64049832,70709184,102958128,124782336,142254252, 189423360,237588120,248250240,344391264] |