n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 12 |
4 | 32 |
5 | 120 |
6 | 300 |
7 | 784 |
8 | 1824 |
9 | 4296 |
10 | 9720 |
11 | 21824 |
12 | 47852 |
13 | 104832 |
14 | 226576 |
15 | 487392 |
16 | 1042208 |
17 | 2219520 |
18 | 4703880 |
19 | 9942016 |
20 | 20940152 |
21 | 43995544 |
22 | 92206400 |
23 | 192843776 |
24 | 402500844 |
25 | 838655520 |
26 | 1744509312 |
27 | 3623427624 |
28 | 7515501648 |
[0,0,0,12,32,120,300,784,1824,4296,9720,21824, 47852,104832,226576,487392,1042208,2219520, 4703880,9942016,20940152,43995544,92206400, 192843776,402500844,838655520,1744509312, 3623427624,7515501648] |