n | a(n) |
---|---|
1 | 6 |
2 | 30 |
3 | 78 |
4 | 246 |
5 | 582 |
6 | 1830 |
7 | 4758 |
8 | 14358 |
9 | 41118 |
10 | 122430 |
11 | 360438 |
12 | 1079742 |
13 | 3213222 |
14 | 9624990 |
15 | 28798926 |
16 | 86319894 |
17 | 258673542 |
18 | 775718310 |
19 | 2326095798 |
20 | 6976966422 |
21 | 20927018814 |
22 | 62775429150 |
23 | 188311523478 |
24 | 564911643486 |
25 | 1694677889958 |
[6,30,78,246,582,1830,4758,14358,41118,122430, 360438,1079742,3213222,9624990,28798926,86319894, 258673542,775718310,2326095798,6976966422, 20927018814,62775429150,188311523478,564911643486, 1694677889958] |