n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 18 |
4 | 58 |
5 | 192 |
6 | 650 |
7 | 2232 |
8 | 7746 |
9 | 27096 |
10 | 95376 |
11 | 337404 |
12 | 1198546 |
13 | 4272308 |
14 | 15273888 |
15 | 54744268 |
16 | 196646922 |
17 | 707747988 |
18 | 2551624304 |
19 | 9213416524 |
20 | 33313656888 |
21 | 120604436624 |
22 | 437112790668 |
23 | 1585877246424 |
24 | 5759085911154 |
[1,2,6,18,58,192,650,2232,7746,27096,95376,337404, 1198546,4272308,15273888,54744268,196646922, 707747988,2551624304,9213416524,33313656888, 120604436624,437112790668,1585877246424, 5759085911154] |