n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 0 |
7 | 1 |
8 | 6 |
9 | 26 |
10 | 94 |
11 | 308 |
12 | 941 |
13 | 2744 |
14 | 7722 |
15 | 21166 |
16 | 56809 |
17 | 149971 |
18 | 390517 |
19 | 1005491 |
20 | 2564164 |
21 | 6485901 |
22 | 16289602 |
23 | 40659669 |
24 | 100934017 |
25 | 249343899 |
26 | 613286048 |
27 | 1502515487 |
28 | 3667953650 |
29 | 8925161513 |
30 | 21652815724 |
31 | 52387028291 |
[0,0,0,0,0,0,1,6,26,94,308,941,2744,7722,21166, 56809,149971,390517,1005491,2564164,6485901, 16289602,40659669,100934017,249343899,613286048, 1502515487,3667953650,8925161513,21652815724, 52387028291] |