n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 384 |
5 | 88264 |
6 | 1665344 |
7 | 14497784 |
8 | 80088992 |
9 | 335122320 |
10 | 1142391712 |
11 | 3358831216 |
12 | 8772323808 |
13 | 20882774744 |
14 | 46000760736 |
15 | 95075730152 |
16 | 186010966464 |
17 | 347367851808 |
18 | 622687135680 |
19 | 1077266143968 |
20 | 1805545001664 |
21 | 2942598571752 |
[0,0,0,384,88264,1665344,14497784,80088992, 335122320,1142391712,3358831216,8772323808, 20882774744,46000760736,95075730152,186010966464, 347367851808,622687135680,1077266143968, 1805545001664,2942598571752] |