n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 20 |
4 | 70 |
5 | 245 |
6 | 874 |
7 | 3164 |
8 | 11577 |
9 | 42694 |
10 | 158431 |
11 | 590873 |
12 | 2212797 |
13 | 8315535 |
14 | 31341163 |
15 | 118423810 |
16 | 448455754 |
17 | 1701534151 |
18 | 6467049185 |
19 | 24617030774 |
20 | 93834205107 |
21 | 358116770601 |
22 | 1368283768753 |
23 | 5233261657558 |
24 | 20034371696497 |
25 | 76763164565117 |
26 | 294357181436313 |
27 | 1129575035419485 |
[1,2,6,20,70,245,874,3164,11577,42694,158431, 590873,2212797,8315535,31341163,118423810, 448455754,1701534151,6467049185,24617030774, 93834205107,358116770601,1368283768753, 5233261657558,20034371696497,76763164565117, 294357181436313,1129575035419485] |