n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 20 |
4 | 190 |
5 | 2313 |
6 | 34461 |
7 | 607408 |
8 | 12360636 |
9 | 285188825 |
10 | 7356173275 |
11 | 209762134236 |
12 | 6552069616170 |
13 | 222481706868337 |
14 | 8159714626124985 |
15 | 321456928026650816 |
16 | 13538204870285608696 |
17 | 606979028986115413329 |
[1,1,3,20,190,2313,34461,607408,12360636, 285188825,7356173275,209762134236,6552069616170, 222481706868337,8159714626124985, 321456928026650816,13538204870285608696, 606979028986115413329] |