n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 14 |
4 | 38 |
5 | 102 |
6 | 294 |
7 | 854 |
8 | 2566 |
9 | 7622 |
10 | 22790 |
11 | 68166 |
12 | 204678 |
13 | 613318 |
14 | 1839750 |
15 | 5518310 |
16 | 16553798 |
17 | 49656774 |
18 | 148968774 |
19 | 446888518 |
20 | 1340652486 |
21 | 4021929542 |
22 | 12065804486 |
23 | 36197270598 |
24 | 108591619654 |
25 | 325774522822 |
26 | 977323956550 |
[1,2,6,14,38,102,294,854,2566,7622,22790,68166, 204678,613318,1839750,5518310,16553798,49656774, 148968774,446888518,1340652486,4021929542, 12065804486,36197270598,108591619654,325774522822, 977323956550] |