n | a(n) |
---|---|
0 | 2 |
1 | 10 |
2 | 48 |
3 | 232 |
4 | 1138 |
5 | 5666 |
6 | 28592 |
7 | 145984 |
8 | 752978 |
9 | 3918282 |
10 | 20547456 |
11 | 108482952 |
12 | 576187554 |
13 | 3076640898 |
14 | 16506527392 |
15 | 88938911296 |
16 | 481067145826 |
17 | 2611212958154 |
18 | 14218923060752 |
19 | 77653486423528 |
20 | 425227486222482 |
[2,10,48,232,1138,5666,28592,145984,752978, 3918282,20547456,108482952,576187554,3076640898, 16506527392,88938911296,481067145826, 2611212958154,14218923060752,77653486423528, 425227486222482] |