n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 8 |
3 | 36 |
4 | 296 |
5 | 2030 |
6 | 15200 |
7 | 112308 |
8 | 845320 |
9 | 6386076 |
10 | 48582438 |
11 | 371138460 |
12 | 2846769992 |
13 | 21905812786 |
14 | 169041544568 |
15 | 1307602672376 |
16 | 10136307859080 |
17 | 78721657307320 |
18 | 612391634798156 |
19 | 4770987007606224 |
20 | 37219155177139126 |
21 | 290702353768374570 |
22 | 2273036878855399720 |
[1,0,8,36,296,2030,15200,112308,845320,6386076, 48582438,371138460,2846769992,21905812786, 169041544568,1307602672376,10136307859080, 78721657307320,612391634798156,4770987007606224, 37219155177139126,290702353768374570, 2273036878855399720] |