n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 2 |
4 | 5 |
5 | 13 |
6 | 35 |
7 | 97 |
8 | 275 |
9 | 794 |
10 | 2327 |
11 | 6905 |
12 | 20705 |
13 | 62642 |
14 | 190987 |
15 | 586219 |
16 | 1810011 |
17 | 5617914 |
18 | 17518463 |
19 | 54857506 |
20 | 172431935 |
21 | 543861219 |
22 | 1720737981 |
23 | 5459867166 |
24 | 17369553427 |
25 | 55391735455 |
26 | 177040109419 |
27 | 567019562429 |
28 | 1819536774089 |
[1,1,1,2,5,13,35,97,275,794,2327,6905,20705,62642, 190987,586219,1810011,5617914,17518463,54857506, 172431935,543861219,1720737981,5459867166, 17369553427,55391735455,177040109419,567019562429, 1819536774089] |