n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 4 |
6 | 10 |
7 | 24 |
8 | 61 |
9 | 148 |
10 | 349 |
11 | 808 |
12 | 1847 |
13 | 4174 |
14 | 9346 |
15 | 20764 |
16 | 45825 |
17 | 100552 |
18 | 219528 |
19 | 477152 |
20 | 1033008 |
21 | 2228480 |
22 | 4792064 |
23 | 10274816 |
24 | 21972224 |
25 | 46872576 |
26 | 99768320 |
27 | 211918848 |
28 | 449277952 |
29 | 950796288 |
30 | 2008809472 |
31 | 4237557760 |
32 | 8926068736 |
33 | 18776326144 |
[0,0,0,0,0,4,10,24,61,148,349,808,1847,4174,9346, 20764,45825,100552,219528,477152,1033008,2228480, 4792064,10274816,21972224,46872576,99768320, 211918848,449277952,950796288,2008809472, 4237557760,8926068736,18776326144] |