n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 7 |
4 | 23 |
5 | 63 |
6 | 213 |
7 | 627 |
8 | 2149 |
9 | 6597 |
10 | 22787 |
11 | 71883 |
12 | 249523 |
13 | 802291 |
14 | 2794365 |
15 | 9111917 |
16 | 31814061 |
17 | 104862813 |
18 | 366796437 |
19 | 1219313185 |
20 | 4271041447 |
21 | 14295561451 |
22 | 50131159253 |
23 | 168742700865 |
24 | 592279599483 |
25 | 2003050663889 |
[1,1,3,7,23,63,213,627,2149,6597,22787,71883, 249523,802291,2794365,9111917,31814061,104862813, 366796437,1219313185,4271041447,14295561451, 50131159253,168742700865,592279599483, 2003050663889] |