n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 1 |
3 | 2 |
4 | 5 |
5 | 12 |
6 | 37 |
7 | 123 |
8 | 446 |
9 | 1689 |
10 | 6693 |
11 | 27034 |
12 | 111630 |
13 | 467262 |
14 | 1981353 |
15 | 8487400 |
16 | 36695369 |
17 | 159918120 |
18 | 701957539 |
19 | 3101072051 |
20 | 13779935438 |
21 | 61557789660 |
22 | 276327463180 |
23 | 1245935891922 |
24 | 5640868033058 |
25 | 25635351908072 |
26 | 116911035023017 |
[0,1,1,2,5,12,37,123,446,1689,6693,27034,111630, 467262,1981353,8487400,36695369,159918120, 701957539,3101072051,13779935438,61557789660, 276327463180,1245935891922,5640868033058, 25635351908072,116911035023017] |