n | a(n) |
---|---|
4 | 1 |
5 | 13 |
6 | 37 |
7 | 73 |
8 | 274 |
9 | 2707 |
10 | 30458 |
11 | 210247 |
12 | 1927098 |
13 | 30544775 |
14 | 732699440 |
15 | 16750707651 |
16 | 417262694530 |
17 | 14440304500005 |
18 | 706310189376904 |
[1,13,37,73,274,2707,30458,210247,1927098, 30544775,732699440,16750707651,417262694530, 14440304500005,706310189376904] |