n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 1 |
3 | 6 |
4 | 27 |
5 | 114 |
6 | 483 |
7 | 2106 |
8 | 9537 |
9 | 44934 |
10 | 219933 |
11 | 1115286 |
12 | 5842707 |
13 | 31537314 |
14 | 174991443 |
15 | 996169146 |
16 | 5808168297 |
17 | 34633891734 |
18 | 210943794093 |
19 | 1310837402646 |
20 | 8302614222507 |
21 | 53552183145234 |
22 | 351468155184003 |
23 | 2345436650546106 |
[0,0,1,6,27,114,483,2106,9537,44934,219933, 1115286,5842707,31537314,174991443,996169146, 5808168297,34633891734,210943794093,1310837402646, 8302614222507,53552183145234,351468155184003, 2345436650546106] |