n | a(n) |
---|---|
0 | 0 |
1 | 2 |
2 | 10 |
3 | 46 |
4 | 202 |
5 | 862 |
6 | 3610 |
7 | 14926 |
8 | 61162 |
9 | 249022 |
10 | 1009210 |
11 | 4076206 |
12 | 16422922 |
13 | 66045982 |
14 | 265246810 |
15 | 1064175886 |
16 | 4266269482 |
17 | 17093775742 |
18 | 68461196410 |
19 | 274103065966 |
20 | 1097187104842 |
21 | 4391072942302 |
22 | 17571265338010 |
23 | 70305982058446 |
24 | 281286690353002 |
25 | 1125335047769662 |
[0,2,10,46,202,862,3610,14926,61162,249022, 1009210,4076206,16422922,66045982,265246810, 1064175886,4266269482,17093775742,68461196410, 274103065966,1097187104842,4391072942302, 17571265338010,70305982058446,281286690353002, 1125335047769662] |