n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 20 |
4 | 70 |
5 | 254 |
6 | 936 |
7 | 3492 |
8 | 13150 |
9 | 49882 |
10 | 190318 |
11 | 729576 |
12 | 2807816 |
13 | 10841962 |
14 | 41983588 |
15 | 162973568 |
16 | 633994982 |
17 | 2471010742 |
18 | 9646981054 |
19 | 37718873700 |
20 | 147676286078 |
21 | 578883674722 |
22 | 2271704404900 |
23 | 8923807316892 |
24 | 35087269756344 |
25 | 138075819924306 |
[1,2,6,20,70,254,936,3492,13150,49882,190318, 729576,2807816,10841962,41983588,162973568, 633994982,2471010742,9646981054,37718873700, 147676286078,578883674722,2271704404900, 8923807316892,35087269756344,138075819924306] |