n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 6 |
3 | 20 |
4 | 95 |
5 | 432 |
6 | 2100 |
7 | 10429 |
8 | 52990 |
9 | 273872 |
10 | 1435464 |
11 | 7610704 |
12 | 40747432 |
13 | 219972284 |
14 | 1196042952 |
15 | 6543872976 |
16 | 36000272857 |
17 | 199016494848 |
18 | 1104987607068 |
19 | 6159118520824 |
20 | 34451516940832 |
21 | 193323839813568 |
22 | 1087995843781768 |
23 | 6139413903894528 |
24 | 34728866786674200 |
25 | 196895381265884724 |
[1,1,6,20,95,432,2100,10429,52990,273872,1435464, 7610704,40747432,219972284,1196042952,6543872976, 36000272857,199016494848,1104987607068, 6159118520824,34451516940832,193323839813568, 1087995843781768,6139413903894528, 34728866786674200,196895381265884724] |