n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 3 |
3 | 6 |
4 | 15 |
5 | 42 |
6 | 126 |
7 | 396 |
8 | 1287 |
9 | 4290 |
10 | 14586 |
11 | 50388 |
12 | 176358 |
13 | 624036 |
14 | 2228700 |
15 | 8023320 |
16 | 29084535 |
17 | 106073010 |
18 | 388934370 |
19 | 1432916100 |
20 | 5301789570 |
21 | 19692361260 |
22 | 73398801060 |
23 | 274447690920 |
24 | 1029178840950 |
25 | 3869712441972 |
26 | 14585839204356 |
[1,2,3,6,15,42,126,396,1287,4290,14586,50388, 176358,624036,2228700,8023320,29084535,106073010, 388934370,1432916100,5301789570,19692361260, 73398801060,274447690920,1029178840950, 3869712441972,14585839204356] |