n | a(n) |
---|---|
0 | 1 |
1 | 5 |
2 | 35 |
3 | 105 |
4 | 1155 |
5 | 3003 |
6 | 15015 |
7 | 36465 |
8 | 692835 |
9 | 1616615 |
10 | 7436429 |
11 | 16900975 |
12 | 152108775 |
13 | 339319575 |
14 | 1502700975 |
15 | 3305942145 |
16 | 115707975075 |
17 | 251835004575 |
18 | 1091285019825 |
19 | 2354878200675 |
20 | 20251952525805 |
21 | 43397041126725 |
22 | 185423721177825 |
23 | 395033145117975 |
[1,5,35,105,1155,3003,15015,36465,692835,1616615, 7436429,16900975,152108775,339319575,1502700975, 3305942145,115707975075,251835004575, 1091285019825,2354878200675,20251952525805, 43397041126725,185423721177825,395033145117975] |