n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 21 |
5 | 78 |
6 | 302 |
7 | 1210 |
8 | 4979 |
9 | 20913 |
10 | 89284 |
11 | 386308 |
12 | 1690221 |
13 | 7465594 |
14 | 33243970 |
15 | 149080710 |
16 | 672682035 |
17 | 3051859515 |
18 | 13913105076 |
19 | 63704186436 |
20 | 292825392338 |
21 | 1350782681404 |
22 | 6251139672412 |
23 | 29014088205700 |
24 | 135029529235367 |
25 | 629978080093921 |
26 | 2945889534054758 |
[1,1,2,6,21,78,302,1210,4979,20913,89284,386308, 1690221,7465594,33243970,149080710,672682035, 3051859515,13913105076,63704186436,292825392338, 1350782681404,6251139672412,29014088205700, 135029529235367,629978080093921,2945889534054758] |