n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 6 |
3 | 66 |
4 | 210 |
5 | 3570 |
6 | 103740 |
7 | 930930 |
8 | 56812470 |
9 | 1722580860 |
10 | 32395433070 |
11 | 265257422430 |
12 | 91348974206490 |
13 | 8923863379851420 |
14 | 330196858581850260 |
15 | 14193386885746698630 |
16 | 2378522762792139793830 |
17 | 351206814022419685159830 |
18 | 28791787439593010836313310 |
[1,3,6,66,210,3570,103740,930930,56812470, 1722580860,32395433070,265257422430, 91348974206490,8923863379851420, 330196858581850260,14193386885746698630, 2378522762792139793830,351206814022419685159830, 28791787439593010836313310] |