n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 3 |
4 | 6 |
5 | 13 |
6 | 39 |
7 | 147 |
8 | 755 |
9 | 5230 |
10 | 50282 |
11 | 677730 |
12 | 13010007 |
13 | 359551127 |
14 | 14457741910 |
15 | 853120090801 |
16 | 74437567936635 |
17 | 9666377127590346 |
18 | 1878877762201043122 |
19 | 549363336929733878734 |
20 | 242695457366120511255070 |
21 | 16263199149257162654631846 |
[1,2,3,6,13,39,147,755,5230,50282,677730,13010007, 359551127,14457741910,853120090801,74437567936635, 9666377127590346,1878877762201043122, 549363336929733878734,242695457366120511255070, 16263199149257162654631846] |