n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 6 |
4 | 40 |
5 | 152 |
6 | 480 |
7 | 1376 |
8 | 3712 |
9 | 9600 |
10 | 24064 |
11 | 58880 |
12 | 141312 |
13 | 333824 |
14 | 778240 |
15 | 1794048 |
16 | 4096000 |
17 | 9273344 |
18 | 20840448 |
19 | 46530560 |
20 | 103284736 |
21 | 228065280 |
22 | 501219328 |
23 | 1096810496 |
24 | 2390753280 |
25 | 5192548352 |
26 | 11240734720 |
27 | 24259854336 |
[0,0,0,6,40,152,480,1376,3712,9600,24064,58880, 141312,333824,778240,1794048,4096000,9273344, 20840448,46530560,103284736,228065280,501219328, 1096810496,2390753280,5192548352,11240734720, 24259854336] |