n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 9 |
3 | 51 |
4 | 327 |
5 | 2252 |
6 | 16259 |
7 | 121406 |
8 | 929743 |
9 | 7261742 |
10 | 57620811 |
11 | 463174907 |
12 | 3763666589 |
13 | 30864808636 |
14 | 255117429497 |
15 | 2123195981867 |
16 | 17776511724391 |
17 | 149625900208462 |
18 | 1265371478104067 |
19 | 10746502200129133 |
20 | 91616252419847037 |
21 | 783751482672817832 |
22 | 6725892179235421461 |
[1,2,9,51,327,2252,16259,121406,929743,7261742, 57620811,463174907,3763666589,30864808636, 255117429497,2123195981867,17776511724391, 149625900208462,1265371478104067, 10746502200129133,91616252419847037, 783751482672817832,6725892179235421461] |