n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 2 |
5 | 1 |
6 | 5 |
7 | 4 |
8 | 9 |
9 | 10 |
10 | 25 |
11 | 46 |
12 | 121 |
13 | 240 |
14 | 619 |
15 | 1353 |
16 | 3286 |
17 | 7773 |
18 | 19044 |
19 | 45759 |
20 | 112243 |
21 | 273188 |
22 | 672172 |
23 | 1646147 |
24 | 4051732 |
25 | 9971377 |
26 | 24619307 |
27 | 60823008 |
28 | 150613157 |
29 | 373188952 |
30 | 926068847 |
31 | 2299616637 |
32 | 5716948683 |
33 | 14223867298 |
34 | 35422864104 |
[0,0,0,2,1,5,4,9,10,25,46,121,240,619,1353,3286, 7773,19044,45759,112243,273188,672172,1646147, 4051732,9971377,24619307,60823008,150613157, 373188952,926068847,2299616637,5716948683, 14223867298,35422864104] |