n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 7 |
3 | 26 |
4 | 89 |
5 | 316 |
6 | 1243 |
7 | 5564 |
8 | 28321 |
9 | 162160 |
10 | 1032051 |
11 | 7226636 |
12 | 55206161 |
13 | 456886912 |
14 | 4072080587 |
15 | 38885496092 |
16 | 396084390849 |
17 | 4286637591872 |
18 | 49121248360291 |
19 | 594159600856332 |
20 | 7565074996215025 |
21 | 101137602761945440 |
[1,2,7,26,89,316,1243,5564,28321,162160,1032051, 7226636,55206161,456886912,4072080587,38885496092, 396084390849,4286637591872,49121248360291, 594159600856332,7565074996215025, 101137602761945440] |