n | a(n) |
---|---|
1 | 1 |
2 | 0 |
3 | 1 |
4 | 1 |
5 | 5 |
6 | 13 |
7 | 48 |
8 | 160 |
9 | 578 |
10 | 2078 |
11 | 7658 |
12 | 28467 |
13 | 107096 |
14 | 406290 |
15 | 1553570 |
16 | 5980040 |
17 | 23154950 |
18 | 90124865 |
19 | 352423336 |
20 | 1383872558 |
21 | 5454586036 |
22 | 21572961498 |
23 | 85587023964 |
24 | 340518976173 |
25 | 1358341426234 |
26 | 5431524909088 |
27 | 21767112830811 |
28 | 87412948227174 |
29 | 351709144912372 |
[1,0,1,1,5,13,48,160,578,2078,7658,28467,107096, 406290,1553570,5980040,23154950,90124865, 352423336,1383872558,5454586036,21572961498, 85587023964,340518976173,1358341426234, 5431524909088,21767112830811,87412948227174, 351709144912372] |