n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 12 |
3 | 53 |
4 | 246 |
5 | 1178 |
6 | 5768 |
7 | 28731 |
8 | 145108 |
9 | 741392 |
10 | 3825418 |
11 | 19907156 |
12 | 104370554 |
13 | 550816506 |
14 | 2924018194 |
15 | 15603778253 |
16 | 83661779470 |
17 | 450479003038 |
18 | 2435009205992 |
19 | 13208558795146 |
20 | 71879906857596 |
21 | 392320357251928 |
22 | 2147102400154768 |
23 | 11780181236675858 |
24 | 64782405317073968 |
25 | 357022158144941548 |
[1,3,12,53,246,1178,5768,28731,145108,741392, 3825418,19907156,104370554,550816506,2924018194, 15603778253,83661779470,450479003038, 2435009205992,13208558795146,71879906857596, 392320357251928,2147102400154768, 11780181236675858,64782405317073968, 357022158144941548] |