n | a(n) |
---|---|
1 | 1 |
2 | 0 |
3 | 1 |
4 | 1 |
5 | 3 |
6 | 5 |
7 | 12 |
8 | 25 |
9 | 57 |
10 | 128 |
11 | 296 |
12 | 688 |
13 | 1618 |
14 | 3839 |
15 | 9170 |
16 | 22065 |
17 | 53370 |
18 | 129807 |
19 | 317080 |
20 | 777887 |
21 | 1915247 |
22 | 4731932 |
23 | 11726476 |
24 | 29143123 |
25 | 72614115 |
26 | 181363151 |
27 | 453975928 |
28 | 1138697689 |
29 | 2861607677 |
30 | 7204169689 |
[1,0,1,1,3,5,12,25,57,128,296,688,1618,3839,9170, 22065,53370,129807,317080,777887,1915247,4731932, 11726476,29143123,72614115,181363151,453975928, 1138697689,2861607677,7204169689] |