n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 5 |
3 | 23 |
4 | 116 |
5 | 669 |
6 | 4429 |
7 | 33375 |
8 | 283072 |
9 | 2673321 |
10 | 27845293 |
11 | 317274407 |
12 | 3926774180 |
13 | 52469606981 |
14 | 752922837861 |
15 | 11549166072847 |
16 | 188596608142560 |
17 | 3266826328953745 |
18 | 59830416584102325 |
19 | 1155208913864163511 |
20 | 23453274942011893556 |
21 | 499481183766226468013 |
[0,1,5,23,116,669,4429,33375,283072,2673321, 27845293,317274407,3926774180,52469606981, 752922837861,11549166072847,188596608142560, 3266826328953745,59830416584102325, 1155208913864163511,23453274942011893556, 499481183766226468013] |