n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 4 |
4 | 9 |
5 | 20 |
6 | 50 |
7 | 147 |
8 | 269 |
9 | 992 |
10 | 1000 |
11 | 4297 |
12 | 76468 |
13 | 97314 |
14 | 445519 |
15 | 1315337 |
16 | 2594742 |
17 | 3888902 |
18 | 91859035 |
19 | 92411466 |
20 | 1180624310 |
21 | 4501485474 |
22 | 11288114818 |
23 | 23434425843 |
[1,2,4,9,20,50,147,269,992,1000,4297,76468,97314, 445519,1315337,2594742,3888902,91859035,92411466, 1180624310,4501485474,11288114818,23434425843] |