n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 7 |
5 | 15 |
6 | 105 |
7 | 855 |
8 | 7855 |
9 | 58915 |
10 | 642385 |
11 | 9004755 |
12 | 115824435 |
13 | 1604808065 |
14 | 25144782705 |
15 | 455128178085 |
16 | 8168562081915 |
17 | 158166596302055 |
18 | 3295573475438405 |
19 | 73982086933664855 |
20 | 1712715517531862335 |
21 | 41970840045144861565 |
22 | 1087768715565961794905 |
[1,1,1,7,15,105,855,7855,58915,642385,9004755, 115824435,1604808065,25144782705,455128178085, 8168562081915,158166596302055,3295573475438405, 73982086933664855,1712715517531862335, 41970840045144861565,1087768715565961794905] |