n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 3 |
5 | 6 |
6 | 24 |
7 | 84 |
8 | 498 |
9 | 2220 |
10 | 15108 |
11 | 92328 |
12 | 773580 |
13 | 5636460 |
14 | 53563476 |
15 | 471562512 |
16 | 5270698716 |
17 | 52117937052 |
18 | 637276396764 |
19 | 7317811499736 |
20 | 100453675122444 |
21 | 1276319138168796 |
22 | 19048874583061716 |
23 | 270233458572751440 |
24 | 4442429353548965628 |
25 | 68384217440167826412 |
[1,1,1,3,6,24,84,498,2220,15108,92328,773580, 5636460,53563476,471562512,5270698716,52117937052, 637276396764,7317811499736,100453675122444, 1276319138168796,19048874583061716, 270233458572751440,4442429353548965628, 68384217440167826412] |