n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 1 |
5 | 0 |
6 | 4 |
7 | 4 |
8 | 16 |
9 | 26 |
10 | 87 |
11 | 181 |
12 | 570 |
13 | 1453 |
14 | 4464 |
15 | 13038 |
16 | 41548 |
17 | 132217 |
18 | 442603 |
19 | 1506803 |
20 | 5305174 |
21 | 19092816 |
22 | 70548770 |
23 | 266495254 |
24 | 1029835424 |
25 | 4063610148 |
26 | 16366919221 |
27 | 67217627966 |
28 | 281326631801 |
29 | 1199048810660 |
30 | 5201341196693 |
31 | 22950740113039 |
32 | 102957953031700 |
[1,0,0,0,1,0,4,4,16,26,87,181,570,1453,4464,13038, 41548,132217,442603,1506803,5305174,19092816, 70548770,266495254,1029835424,4063610148, 16366919221,67217627966,281326631801, 1199048810660,5201341196693,22950740113039, 102957953031700] |