n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 2 |
5 | 8 |
6 | 24 |
7 | 62 |
8 | 148 |
9 | 336 |
10 | 738 |
11 | 1584 |
12 | 3344 |
13 | 6974 |
14 | 14412 |
15 | 29576 |
16 | 60370 |
17 | 122712 |
18 | 248616 |
19 | 502398 |
20 | 1013156 |
21 | 2039840 |
22 | 4101570 |
23 | 8238560 |
24 | 16534432 |
25 | 33161598 |
26 | 66473244 |
27 | 133189272 |
28 | 266771378 |
29 | 534178376 |
30 | 1069385208 |
31 | 2140434494 |
32 | 4283561524 |
33 | 8571479664 |
34 | 17150008482 |
35 | 34311422736 |
36 | 68641300400 |
[0,0,0,0,2,8,24,62,148,336,738,1584,3344,6974, 14412,29576,60370,122712,248616,502398,1013156, 2039840,4101570,8238560,16534432,33161598, 66473244,133189272,266771378,534178376,1069385208, 2140434494,4283561524,8571479664,17150008482, 34311422736,68641300400] |