n | a(n) |
---|---|
0 | 0 |
1 | 2 |
2 | 8 |
3 | 24 |
4 | 64 |
5 | 156 |
6 | 358 |
7 | 786 |
8 | 1664 |
9 | 3434 |
10 | 6902 |
11 | 13656 |
12 | 26464 |
13 | 50772 |
14 | 95754 |
15 | 179442 |
16 | 331294 |
17 | 609496 |
18 | 1106106 |
19 | 2004852 |
20 | 3586874 |
21 | 6423028 |
22 | 11351274 |
23 | 20126538 |
24 | 35191190 |
25 | 61883196 |
26 | 107179834 |
27 | 187216848 |
28 | 321395596 |
29 | 558468104 |
[0,2,8,24,64,156,358,786,1664,3434,6902,13656, 26464,50772,95754,179442,331294,609496,1106106, 2004852,3586874,6423028,11351274,20126538, 35191190,61883196,107179834,187216848,321395596, 558468104] |