n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 40 |
6 | 232 |
7 | 1072 |
8 | 4400 |
9 | 16864 |
10 | 61728 |
11 | 218496 |
12 | 753792 |
13 | 2547840 |
14 | 8468608 |
15 | 27755776 |
16 | 89886976 |
17 | 288101888 |
18 | 915089920 |
19 | 2883416064 |
20 | 9021001728 |
21 | 28042881024 |
22 | 86672025600 |
23 | 266472878080 |
24 | 815347462144 |
25 | 2483820617728 |
[0,0,0,0,0,40,232,1072,4400,16864,61728,218496, 753792,2547840,8468608,27755776,89886976, 288101888,915089920,2883416064,9021001728, 28042881024,86672025600,266472878080,815347462144, 2483820617728] |