n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 0 |
7 | 0 |
8 | 0 |
9 | 1 |
10 | 10 |
11 | 55 |
12 | 220 |
13 | 715 |
14 | 2002 |
15 | 5005 |
16 | 11440 |
17 | 24310 |
18 | 72930 |
19 | 1016158 |
20 | 18643560 |
21 | 258952330 |
22 | 2845739820 |
23 | 26177047270 |
24 | 209411148144 |
25 | 1495786618975 |
26 | 9722602868550 |
27 | 58373582056075 |
28 | 329869586346300 |
29 | 1861266055353705 |
[1,0,0,0,0,0,0,0,0,1,10,55,220,715,2002,5005, 11440,24310,72930,1016158,18643560,258952330, 2845739820,26177047270,209411148144,1495786618975, 9722602868550,58373582056075,329869586346300, 1861266055353705] |