n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 16 |
5 | 40 |
6 | 100 |
7 | 252 |
8 | 636 |
9 | 1604 |
10 | 4044 |
11 | 10196 |
12 | 25708 |
13 | 64820 |
14 | 163436 |
15 | 412084 |
16 | 1039020 |
17 | 2619764 |
18 | 6605420 |
19 | 16654772 |
20 | 41993004 |
21 | 105880308 |
22 | 266964460 |
23 | 673118772 |
24 | 1697188012 |
25 | 4279255412 |
26 | 10789627756 |
27 | 27204748468 |
28 | 68593500716 |
29 | 172950260724 |
30 | 436073277676 |
[1,1,2,6,16,40,100,252,636,1604,4044,10196,25708, 64820,163436,412084,1039020,2619764,6605420, 16654772,41993004,105880308,266964460,673118772, 1697188012,4279255412,10789627756,27204748468, 68593500716,172950260724,436073277676] |