n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 20 |
4 | 70 |
5 | 252 |
6 | 926 |
7 | 3460 |
8 | 13110 |
9 | 50252 |
10 | 194446 |
11 | 758100 |
12 | 2973350 |
13 | 11716252 |
14 | 46333566 |
15 | 183739940 |
16 | 730176790 |
17 | 2906358252 |
18 | 11582386286 |
19 | 46200404980 |
20 | 184414199430 |
21 | 736494536252 |
22 | 2942491360606 |
23 | 11759505089220 |
24 | 47006639297270 |
[1,2,6,20,70,252,926,3460,13110,50252,194446, 758100,2973350,11716252,46333566,183739940, 730176790,2906358252,11582386286,46200404980, 184414199430,736494536252,2942491360606, 11759505089220,47006639297270] |