n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 3 |
4 | 13 |
5 | 70 |
6 | 462 |
7 | 3592 |
8 | 32056 |
9 | 322626 |
10 | 3611890 |
11 | 44491654 |
12 | 597714474 |
13 | 8693651092 |
14 | 136059119332 |
15 | 2279212812480 |
16 | 40681707637888 |
17 | 770631412413148 |
18 | 15438647456063004 |
19 | 326091322648369684 |
20 | 7241563996136849260 |
21 | 168657537987709667976 |
22 | 4110364564664358194536 |
[1,1,1,3,13,70,462,3592,32056,322626,3611890, 44491654,597714474,8693651092,136059119332, 2279212812480,40681707637888,770631412413148, 15438647456063004,326091322648369684, 7241563996136849260,168657537987709667976, 4110364564664358194536] |