n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 3 |
5 | 6 |
6 | 10 |
7 | 15 |
8 | 35 |
9 | 70 |
10 | 126 |
11 | 210 |
12 | 462 |
13 | 924 |
14 | 1716 |
15 | 3003 |
16 | 6435 |
17 | 12870 |
18 | 24310 |
19 | 43758 |
20 | 92378 |
21 | 184756 |
22 | 352716 |
23 | 646646 |
24 | 1352078 |
25 | 2704156 |
26 | 5200300 |
27 | 9657700 |
28 | 20058300 |
29 | 40116600 |
30 | 77558760 |
31 | 145422675 |
32 | 300540195 |
33 | 601080390 |
34 | 1166803110 |
35 | 2203961430 |
36 | 4537567650 |
37 | 9075135300 |
38 | 17672631900 |
[1,1,1,3,6,10,15,35,70,126,210,462,924,1716,3003, 6435,12870,24310,43758,92378,184756,352716,646646, 1352078,2704156,5200300,9657700,20058300,40116600, 77558760,145422675,300540195,601080390,1166803110, 2203961430,4537567650,9075135300,17672631900] |