n | a(n) |
---|---|
1 | 1 |
2 | 10 |
3 | 630 |
4 | 16290 |
5 | 52650 |
6 | 165600 |
7 | 986310 |
8 | 3428271 |
9 | 9446031 |
10 | 9485190 |
11 | 10693000 |
12 | 23698170 |
13 | 52168005 |
14 | 1270004401 |
15 | 2597150556 |
16 | 3484079550 |
17 | 14214075921 |
18 | 140884670790 |
19 | 217958758920 |
20 | 238847271435 |
21 | 403146774891 |
[1,10,630,16290,52650,165600,986310,3428271, 9446031,9485190,10693000,23698170,52168005, 1270004401,2597150556,3484079550,14214075921, 140884670790,217958758920,238847271435, 403146774891] |