n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 2 |
5 | 22 |
6 | 82 |
7 | 268 |
8 | 742 |
9 | 1902 |
10 | 4562 |
11 | 10452 |
12 | 23068 |
13 | 49432 |
14 | 103364 |
15 | 211764 |
16 | 426354 |
17 | 845626 |
18 | 1655454 |
19 | 3203876 |
20 | 6137946 |
21 | 11652946 |
22 | 21944034 |
23 | 41021256 |
24 | 76174360 |
25 | 140595760 |
26 | 258061160 |
27 | 471255240 |
28 | 856536610 |
29 | 1550048766 |
30 | 2793774026 |
31 | 5016560956 |
32 | 8976350894 |
[0,0,0,2,22,82,268,742,1902,4562,10452,23068, 49432,103364,211764,426354,845626,1655454,3203876, 6137946,11652946,21944034,41021256,76174360, 140595760,258061160,471255240,856536610, 1550048766,2793774026,5016560956,8976350894] |