n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 2 |
4 | 5 |
5 | 16 |
6 | 56 |
7 | 204 |
8 | 759 |
9 | 2880 |
10 | 11132 |
11 | 43732 |
12 | 174122 |
13 | 700952 |
14 | 2847840 |
15 | 11661592 |
16 | 48080811 |
17 | 199433880 |
18 | 831649380 |
19 | 3484523460 |
20 | 14662036550 |
21 | 61931353880 |
22 | 262503848400 |
23 | 1116179957160 |
24 | 4759795460550 |
25 | 20351410848288 |
26 | 87229181620152 |
27 | 374722175164232 |
28 | 1613115479264852 |
29 | 6957700944802160 |
30 | 30064406772108544 |
[1,1,2,5,16,56,204,759,2880,11132,43732,174122, 700952,2847840,11661592,48080811,199433880, 831649380,3484523460,14662036550,61931353880, 262503848400,1116179957160,4759795460550, 20351410848288,87229181620152,374722175164232, 1613115479264852,6957700944802160, 30064406772108544] |