n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 10 |
4 | 35 |
5 | 126 |
6 | 462 |
7 | 1716 |
8 | 6435 |
9 | 24310 |
10 | 92378 |
11 | 352716 |
12 | 1352078 |
13 | 5200300 |
14 | 20058300 |
15 | 77558760 |
16 | 300540195 |
17 | 1166803110 |
18 | 4537567650 |
19 | 17672631900 |
20 | 68923264410 |
21 | 269128937220 |
22 | 1052049481860 |
23 | 4116715363800 |
24 | 16123801841550 |
25 | 63205303218876 |
26 | 247959266474052 |
[1,1,3,10,35,126,462,1716,6435,24310,92378,352716, 1352078,5200300,20058300,77558760,300540195, 1166803110,4537567650,17672631900,68923264410, 269128937220,1052049481860,4116715363800, 16123801841550,63205303218876,247959266474052] |