n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 5 |
3 | 13 |
4 | 49 |
5 | 161 |
6 | 581 |
7 | 2045 |
8 | 7393 |
9 | 26689 |
10 | 97285 |
11 | 355565 |
12 | 1305745 |
13 | 4808545 |
14 | 17760965 |
15 | 65753693 |
16 | 243954113 |
17 | 906758785 |
18 | 3375949829 |
19 | 12587460557 |
20 | 46995614449 |
21 | 175669746209 |
22 | 657370655045 |
23 | 2462383495357 |
24 | 9232029156001 |
[1,1,5,13,49,161,581,2045,7393,26689,97285,355565, 1305745,4808545,17760965,65753693,243954113, 906758785,3375949829,12587460557,46995614449, 175669746209,657370655045,2462383495357, 9232029156001] |