n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 5 |
3 | 25 |
4 | 219 |
5 | 1978 |
6 | 18395 |
7 | 171529 |
8 | 1601725 |
9 | 14956266 |
10 | 139629194 |
11 | 1303138445 |
12 | 12157779067 |
13 | 113382522382 |
14 | 1056867697737 |
15 | 9843661720634 |
16 | 91532722388023 |
17 | 846837132071729 |
18 | 7668156860181597 |
[1,1,5,25,219,1978,18395,171529,1601725,14956266, 139629194,1303138445,12157779067,113382522382, 1056867697737,9843661720634,91532722388023, 846837132071729,7668156860181597] |