n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 5 |
3 | 18 |
4 | 67 |
5 | 265 |
6 | 1099 |
7 | 4643 |
8 | 20058 |
9 | 87824 |
10 | 389913 |
11 | 1748536 |
12 | 7912724 |
13 | 36077145 |
14 | 165557041 |
15 | 764080657 |
16 | 3543683898 |
17 | 16507628879 |
18 | 77195125901 |
19 | 362254825221 |
20 | 1705274626268 |
21 | 8050258264036 |
22 | 38101717384395 |
23 | 180760898609370 |
24 | 859416339775966 |
25 | 4094188981018980 |
26 | 19540298801674099 |
27 | 93418913985941418 |
[1,2,5,18,67,265,1099,4643,20058,87824,389913, 1748536,7912724,36077145,165557041,764080657, 3543683898,16507628879,77195125901,362254825221, 1705274626268,8050258264036,38101717384395, 180760898609370,859416339775966,4094188981018980, 19540298801674099,93418913985941418] |