n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 1 |
5 | 6 |
6 | 26 |
7 | 97 |
8 | 331 |
9 | 1064 |
10 | 3277 |
11 | 9775 |
12 | 28448 |
13 | 81201 |
14 | 228211 |
15 | 633384 |
16 | 1740037 |
17 | 4740327 |
18 | 12825008 |
19 | 34500649 |
20 | 92372683 |
21 | 246352952 |
22 | 654878173 |
23 | 1736172895 |
24 | 4592568896 |
25 | 12125944161 |
26 | 31967715811 |
27 | 84170419272 |
28 | 221388694261 |
29 | 581807602839 |
30 | 1527909651152 |
31 | 4010192518105 |
[0,0,0,0,1,6,26,97,331,1064,3277,9775,28448,81201, 228211,633384,1740037,4740327,12825008,34500649, 92372683,246352952,654878173,1736172895, 4592568896,12125944161,31967715811,84170419272, 221388694261,581807602839,1527909651152, 4010192518105] |