n | a(n) |
---|---|
1 | 2 |
2 | 6 |
3 | 19 |
4 | 62 |
5 | 206 |
6 | 692 |
7 | 2340 |
8 | 7944 |
9 | 27032 |
10 | 92112 |
11 | 314128 |
12 | 1071776 |
13 | 3657824 |
14 | 12485696 |
15 | 42623040 |
16 | 145512576 |
17 | 496787840 |
18 | 1696093440 |
19 | 5790732544 |
20 | 19770612224 |
21 | 67500721664 |
22 | 230461137920 |
23 | 786842059776 |
24 | 2686443866112 |
[2,6,19,62,206,692,2340,7944,27032,92112,314128, 1071776,3657824,12485696,42623040,145512576, 496787840,1696093440,5790732544,19770612224, 67500721664,230461137920,786842059776, 2686443866112] |