n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 1 |
4 | 2 |
5 | 3 |
6 | 8 |
7 | 17 |
8 | 56 |
9 | 155 |
10 | 608 |
11 | 2073 |
12 | 9440 |
13 | 38227 |
14 | 198272 |
15 | 929569 |
16 | 5410688 |
17 | 28820619 |
18 | 186043904 |
19 | 1109652905 |
20 | 7867739648 |
21 | 51943281731 |
22 | 401293838336 |
23 | 2905151042481 |
24 | 24290513745920 |
25 | 191329672483963 |
26 | 1721379917619200 |
27 | 14655626154768697 |
28 | 141174819474169856 |
[1,1,1,1,2,3,8,17,56,155,608,2073,9440,38227, 198272,929569,5410688,28820619,186043904, 1109652905,7867739648,51943281731,401293838336, 2905151042481,24290513745920,191329672483963, 1721379917619200,14655626154768697, 141174819474169856] |