n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 21 |
5 | 91 |
6 | 467 |
7 | 2755 |
8 | 18523 |
9 | 139740 |
10 | 1169616 |
11 | 10763807 |
12 | 108028386 |
13 | 1174391384 |
14 | 13748315494 |
15 | 172439034531 |
16 | 2306986699190 |
17 | 32792999417180 |
18 | 493559520202535 |
19 | 7841127918788283 |
20 | 131127477517244419 |
21 | 2302491655047553206 |
22 | 42355105188617740229 |
[1,1,2,6,21,91,467,2755,18523,139740,1169616, 10763807,108028386,1174391384,13748315494, 172439034531,2306986699190,32792999417180, 493559520202535,7841127918788283, 131127477517244419,2302491655047553206, 42355105188617740229] |