n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 3 |
3 | 7 |
4 | 33 |
5 | 285 |
6 | 3648 |
7 | 61306 |
8 | 1270440 |
9 | 31244205 |
10 | 888288960 |
11 | 28640745684 |
12 | 1032065614715 |
13 | 41087944243649 |
14 | 1790413981105727 |
15 | 84737880414848784 |
16 | 4327877295100145382 |
17 | 237218770042549151701 |
18 | 13887772416031152573506 |
[1,2,3,7,33,285,3648,61306,1270440,31244205, 888288960,28640745684,1032065614715, 41087944243649,1790413981105727,84737880414848784, 4327877295100145382,237218770042549151701, 13887772416031152573506] |