n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 2 |
7 | 2 |
8 | 8 |
9 | 14 |
10 | 36 |
11 | 62 |
12 | 140 |
13 | 252 |
14 | 522 |
15 | 968 |
16 | 1920 |
17 | 3600 |
18 | 7028 |
19 | 13286 |
20 | 25704 |
21 | 48914 |
22 | 94302 |
23 | 180314 |
24 | 347480 |
25 | 666996 |
26 | 1286460 |
27 | 2477328 |
28 | 4785300 |
29 | 9240012 |
30 | 17879314 |
31 | 34604066 |
32 | 67076096 |
33 | 130084990 |
34 | 252579600 |
35 | 490722342 |
36 | 954306080 |
[0,0,0,0,0,0,2,2,8,14,36,62,140,252,522,968,1920, 3600,7028,13286,25704,48914,94302,180314,347480, 666996,1286460,2477328,4785300,9240012,17879314, 34604066,67076096,130084990,252579600,490722342, 954306080] |