n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 12 |
4 | 32 |
5 | 120 |
6 | 288 |
7 | 784 |
8 | 1792 |
9 | 4284 |
10 | 9600 |
11 | 21824 |
12 | 47520 |
13 | 104832 |
14 | 225792 |
15 | 487260 |
16 | 1040384 |
17 | 2219520 |
18 | 4699296 |
19 | 9942016 |
20 | 20930400 |
21 | 43994748 |
22 | 92184576 |
23 | 192843776 |
24 | 402451200 |
25 | 838655400 |
26 | 1744404480 |
27 | 3623423328 |
28 | 7515275040 |
[0,0,0,12,32,120,288,784,1792,4284,9600,21824, 47520,104832,225792,487260,1040384,2219520, 4699296,9942016,20930400,43994748,92184576, 192843776,402451200,838655400,1744404480, 3623423328,7515275040] |