n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 1 |
6 | 3 |
7 | 8 |
8 | 18 |
9 | 40 |
10 | 87 |
11 | 191 |
12 | 400 |
13 | 855 |
14 | 1776 |
15 | 3697 |
16 | 7644 |
17 | 15752 |
18 | 32365 |
19 | 66304 |
20 | 135570 |
21 | 276590 |
22 | 563432 |
23 | 1146045 |
24 | 2328063 |
25 | 4724270 |
26 | 9577176 |
27 | 19397428 |
28 | 39256129 |
29 | 79390449 |
30 | 160450210 |
31 | 324088695 |
32 | 654261484 |
[0,0,0,0,1,3,8,18,40,87,191,400,855,1776,3697, 7644,15752,32365,66304,135570,276590,563432, 1146045,2328063,4724270,9577176,19397428,39256129, 79390449,160450210,324088695,654261484] |