n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 4 |
3 | 8 |
4 | 20 |
5 | 72 |
6 | 244 |
7 | 968 |
8 | 3700 |
9 | 14792 |
10 | 58484 |
11 | 233928 |
12 | 932980 |
13 | 3731912 |
14 | 14916724 |
15 | 59666888 |
16 | 238623860 |
17 | 954495432 |
18 | 3817806964 |
19 | 15271227848 |
20 | 61084212340 |
21 | 244336849352 |
22 | 977344601204 |
23 | 3909378404808 |
24 | 15637502434420 |
[1,2,4,8,20,72,244,968,3700,14792,58484,233928, 932980,3731912,14916724,59666888,238623860, 954495432,3817806964,15271227848,61084212340, 244336849352,977344601204,3909378404808, 15637502434420] |