n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 1 |
3 | 2 |
4 | 8 |
5 | 18 |
6 | 49 |
7 | 129 |
8 | 338 |
9 | 890 |
10 | 2340 |
11 | 6153 |
12 | 16181 |
13 | 42550 |
14 | 111892 |
15 | 294238 |
16 | 773745 |
17 | 2034685 |
18 | 5350526 |
19 | 14070054 |
20 | 36999432 |
21 | 97295857 |
22 | 255854841 |
23 | 672810762 |
24 | 1769262288 |
25 | 4652554954 |
[0,1,1,2,8,18,49,129,338,890,2340,6153,16181, 42550,111892,294238,773745,2034685,5350526, 14070054,36999432,97295857,255854841,672810762, 1769262288,4652554954] |