n | a(n) |
---|---|
1 | 1 |
2 | 0 |
3 | 1 |
4 | 0 |
5 | 0 |
6 | 1 |
7 | 2 |
8 | 4 |
9 | 10 |
10 | 24 |
11 | 56 |
12 | 133 |
13 | 318 |
14 | 760 |
15 | 1822 |
16 | 4384 |
17 | 10576 |
18 | 25578 |
19 | 62020 |
20 | 150744 |
21 | 367220 |
22 | 896496 |
23 | 2193104 |
24 | 5375405 |
25 | 13199606 |
26 | 32468912 |
27 | 80000438 |
28 | 197423104 |
29 | 487921440 |
30 | 1207578750 |
31 | 2992704924 |
32 | 7426194328 |
33 | 18449964876 |
34 | 45890849360 |
[1,0,1,0,0,1,2,4,10,24,56,133,318,760,1822,4384, 10576,25578,62020,150744,367220,896496,2193104, 5375405,13199606,32468912,80000438,197423104, 487921440,1207578750,2992704924,7426194328, 18449964876,45890849360] |