n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 6 |
4 | 15 |
5 | 33 |
6 | 83 |
7 | 196 |
8 | 491 |
9 | 1214 |
10 | 3068 |
11 | 7754 |
12 | 19834 |
13 | 50872 |
14 | 131423 |
15 | 340763 |
16 | 887839 |
17 | 2321193 |
18 | 6090979 |
19 | 16031341 |
20 | 42319223 |
21 | 112003765 |
22 | 297164610 |
23 | 790190726 |
24 | 2105607907 |
25 | 5621642203 |
26 | 15036126167 |
27 | 40284850520 |
28 | 108102408101 |
[1,1,3,6,15,33,83,196,491,1214,3068,7754,19834, 50872,131423,340763,887839,2321193,6090979, 16031341,42319223,112003765,297164610,790190726, 2105607907,5621642203,15036126167,40284850520, 108102408101] |