n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 23 |
4 | 94 |
5 | 392 |
6 | 1659 |
7 | 7107 |
8 | 30734 |
9 | 133880 |
10 | 586576 |
11 | 2582142 |
12 | 11411371 |
13 | 50597900 |
14 | 224986467 |
15 | 1002867878 |
16 | 4479814606 |
17 | 20049099908 |
18 | 89878609344 |
19 | 403521966942 |
20 | 1814102538624 |
21 | 8165526187128 |
22 | 36794746597494 |
23 | 165968135843522 |
24 | 749314496125451 |
25 | 3385881647958442 |
[1,2,6,23,94,392,1659,7107,30734,133880,586576, 2582142,11411371,50597900,224986467,1002867878, 4479814606,20049099908,89878609344,403521966942, 1814102538624,8165526187128,36794746597494, 165968135843522,749314496125451,3385881647958442] |