n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 2 |
5 | 4 |
6 | 8 |
7 | 18 |
8 | 44 |
9 | 104 |
10 | 242 |
11 | 564 |
12 | 1320 |
13 | 3090 |
14 | 7228 |
15 | 16904 |
16 | 39538 |
17 | 92484 |
18 | 216328 |
19 | 506002 |
20 | 1183564 |
21 | 2768424 |
22 | 6475506 |
23 | 15146580 |
24 | 35428712 |
25 | 82869778 |
26 | 193837148 |
27 | 453396168 |
28 | 1060519538 |
29 | 2480615780 |
30 | 5802302024 |
31 | 13571915922 |
32 | 31745486700 |
33 | 74254506984 |
[1,0,0,0,2,4,8,18,44,104,242,564,1320,3090,7228, 16904,39538,92484,216328,506002,1183564,2768424, 6475506,15146580,35428712,82869778,193837148, 453396168,1060519538,2480615780,5802302024, 13571915922,31745486700,74254506984] |