n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 11 |
4 | 48 |
5 | 232 |
6 | 1207 |
7 | 6631 |
8 | 37998 |
9 | 225182 |
10 | 1371560 |
11 | 8546760 |
12 | 54294880 |
13 | 350658336 |
14 | 2297296991 |
15 | 15239785151 |
16 | 102218278626 |
17 | 692361482818 |
18 | 4730891905450 |
19 | 32581995322522 |
20 | 226000929559056 |
21 | 1577824515023456 |
22 | 11080975421752488 |
23 | 78244477268207656 |
[1,1,3,11,48,232,1207,6631,37998,225182,1371560, 8546760,54294880,350658336,2297296991,15239785151, 102218278626,692361482818,4730891905450, 32581995322522,226000929559056,1577824515023456, 11080975421752488,78244477268207656] |